Orion Group Holdings Inc 10-Q

ITEM 1. FINANCIAL STATEMENTS ​ Orion Group Holdings, Inc. and Subsidiaries Condensed Consolidated Balance Sheets (In Thousands, Except Share and Per Share Information) ​ ​ ​ ​ ​ ​ ​ ​ March 31, December 31, ​ ​ 2021 2020 ​ ​ (Unaudited) ​ ​ ​ Current assets: ​ ​ Cash and cash equivalents ​ $ 4,642 ​ $ 1,589 Accounts receivable: ​ ​ Trade, net of allowance for credit losses of $ 323 and $ 411 , respectively ​ 92,553 ​ 96,369 Retainage ​ 38,043 ​ 36,485 Income taxes receivable ​ 419 ​ 419 Other current ​ 57,153 ​ 59,492 Inventory ​ 1,680 ​ 1,548 Contract assets ​ 21,797 ​ 32,271 Prepaid expenses and other ​ 7,254 ​ 7,229 Total current assets ​ 223,541 ​ 235,402 Property and equipment, net of depreciation ​ 120,879 ​ 125,497 Operating lease right-of-use assets, net of amortization ​ ​ 17,480 ​ ​ 18,874 Financing lease right-of-use assets, net of amortization ​ ​ 12,097 ​ ​ 12,858 Inventory, non-current ​ 6,249 ​ 6,455 Intangible assets, net of amortization ​ 9,697 ​ 10,077 Deferred income tax asset ​ ​ 41 ​ ​ 70 Other non-current ​ 4,871 ​ 4,956 Total assets ​ $ 394,855 ​ $ 414,189 LIABILITIES AND STOCKHOLDERS’ EQUITY ​ ​ Current liabilities: ​ ​ Current debt, net of debt issuance costs ​ $ 4,348 ​ $ 4,344 Accounts payable: ​ ​ ​ ​ Trade ​ 38,242 ​ 48,252 Retainage ​ 990 ​ 716 Accrued liabilities ​ 77,701 ​ 84,637 Income taxes payable ​ 776 ​ 639 Contract liabilities ​ 33,150 ​ 33,135 Current portion of operating lease liabilities ​ ​ 4,777 ​ ​ 4,989 Current portion of financing lease liabilities ​ ​ 2,878 ​ ​ 3,901 Total current liabilities ​ ​ 162,862 ​ ​ 180,613 Long-term debt, net of debt issuance costs ​ 23,603 ​ 29,523 Operating lease liabilities ​ ​ 13,512 ​ ​ 14,537 Financing lease liabilities ​ ​ 8,680 ​ ​ 8,376 Other long-term liabilities ​ 23,513 ​ 19,837 Deferred income tax liability ​ 228 ​ 207 Interest rate swap liability ​ 1,372 ​ 1,602 Total liabilities ​ 233,770 ​ ​ 254,695 Stockholders’ equity: ​ ​ Preferred stock -- $ 0.01 par value, 10,000,000 authorized, none issued ​ — ​ — Common stock -- $ 0.01 par value, 50,000,000 authorized, 31,188,886 and 31,171,804 issued; 30,477,655 and 30,460,573 outstanding at March 31, 2021 and December 31, 2020, respectively ​ 312 ​ 312 Treasury stock, 711,231 shares, at cost, as of March 31, 2021 and December 31, 2020, respectively ​ ( 6,540 ) ​ ( 6,540 ) Accumulated other comprehensive loss ​ ( 1,372 ) ​ ( 1,602 ) Additional paid-in capital ​ 184,757 ​ 184,324 Retained loss ​ ( 16,072 ) ​ ( 17,000 ) Total stockholders’ equity ​ 161,085 ​ 159,494 Total liabilities and stockholders’ equity ​ $ 394,855 ​ $ 414,189 ​ The accompanying notes are an integral part of these condensed consolidated financial statements 3 ​ Table of Contents ​ Orion Group Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Operations (In Thousands, Except Share and Per Share Information) (Unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2021 2020 Contract revenues ​ $ 153,309 ​ $ 166,620 ​ Costs of contract revenues ​ 137,854 ​ 146,862 ​ Gross profit ​ 15,455 ​ 19,758 ​ Selling, general and administrative expenses ​ 14,630 ​ 15,869 ​ Amortization of intangible assets ​ ​ 380 ​ ​ 516 ​ Gain on disposal of assets, net ​ ( 1,610 ) ​ ( 992 ) ​ Operating income ​ 2,055 ​ 4,365 ​ Other (expense) income: ​ ​ ​ Other income ​ 37 ​ 97 ​ Interest income ​ 26 ​ 40 ​ Interest expense ​ ( 1,040 ) ​ ( 1,402 ) ​ Other expense, net ​ ( 977 ) ​ ( 1,265 ) ​ Income before income taxes ​ 1,078 ​ 3,100 ​ Income tax expense ​ 150 ​ 377 ​ Net income ​ $ 928 ​ $ 2,723 ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic earnings per share ​ $ 0.03 ​ $ 0.09 ​ Diluted earnings per share ​ $ 0.03 ​ $ 0.09 ​ Shares used to compute income per share: ​ ​ ​ Basic ​ 30,465,475 ​ 29,653,409 ​ Diluted ​ 30,499,978 ​ 29,655,557 ​ ​ The accompanying notes are an integral part of these condensed consolidated financial statements ​ 4 ​ Table of Contents Orion Group Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Comprehensive Income (In Thousands) (Unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2021 2020 Net income ​ $ 928 ​ $ 2,723 ​ Change in fair value of cash flow hedge, net of tax expense of $ 53 and net of tax benefit of $ 226 for the three months ended March 31, 2021 and March 31, 2020, respectively. ​ 177 ​ ( 758 ) ​ Total comprehensive income ​ $ 1,105 ​ $ 1,965 ​ ​ The accompanying notes are an integral part of these condensed consolidated financial statements ​ 5 ​ Table of Contents Orion Group Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Stockholders’ Equity (In Thousands, Except Share and Per Share Information) (Unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common Treasury Accumulated Other Additional ​ ​ ​ ​ ​ ​ Stock ​ Stock Comprehensive Paid-In Retained ​ ​ ​ ​ ​ Shares Amount ​ Shares Amount Loss Capital ​ Earnings (Loss) ​ Total Balance, December 31, 2020 ​ 31,171,804 ​ $ 312 ​ ( 711,231 ) ​ $ ( 6,540 ) ​ $ ( 1,602 ) ​ $ 184,324 ​ $ ( 17,000 ) ​ $ 159,494 Stock-based compensation ​ — ​ ​ — ​ — ​ ​ — ​ ​ — ​ ​ 383 ​ ​ — ​ ​ 383 Exercise of stock options ​ 23,755 ​ ​ — ​ — ​ ​ — ​ ​ — ​ ​ 86 ​ ​ — ​ ​ 86 Payments related to tax withholding for stock-based compensation ​ ( 6,673 ) ​ ​ — ​ — ​ ​ — ​ ​ — ​ ​ ( 36 ) ​ ​ — ​ ​ ( 36 ) Cash flow hedge ​ — ​ ​ — ​ — ​ ​ — ​ ​ 230 ​ ​ — ​ ​ — ​ ​ 230 Net income — ​ ​ — ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 928 ​ ​ 928 Balance, March 31, 2021 ​ 31,188,886 ​ $ 312 ( 711,231 ) ​ $ ( 6,540 ) ​ $ ( 1,372 ) ​ $ 184,757 ​ $ ( 16,072 ) ​ $ 161,085 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common Treasury Accumulated Other Additional ​ ​ ​ ​ ​ ​ Stock ​ Stock Comprehensive Paid-In Retained ​ ​ ​ ​ ​ Shares Amount ​ Shares Amount Loss Capital ​ Earnings (Loss) ​ Total Balance, December 31, 2019 30,303,395 ​ $ 303 ( 711,231 ) ​ $ ( 6,540 ) ​ $ ( 1,045 ) ​ $ 182,523 ​ $ ( 37,220 ) ​ $ 138,021 Stock-based compensation — ​ — — ​ — ​ — ​ 462 ​ — ​ 462 Issuance of restricted stock 185,356 ​ 2 — ​ — ​ — ​ ( 2 ) ​ — ​ — Forfeiture of restricted stock ( 3,351 ) ​ — — ​ — ​ — ​ — ​ — ​ — Cash flow hedge — ​ — — ​ — ​ ( 984 ) ​ — ​ — ​ ( 984 ) Net income — ​ — — ​ — ​ — ​ — ​ 2,723 ​ 2,723 Balance, March 31, 2020 30,485,400 ​ $ 305 ( 711,231 ) ​ $ ( 6,540 ) ​ $ ( 2,029 ) ​ $ 182,983 ​ $ ( 34,497 ) ​ $ 140,222 ​ The accompanying notes are an integral part of these condensed consolidated financial statements 6 ​ Table of Contents Orion Group Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Cash Flows (in thousands) (Unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2021 2020 Cash flows from operating activities: ​ ​ Net income ​ $ 928 ​ $ 2,723 Adjustments to reconcile net income to net cash used in operating activities: ​ ​ ​ Operating activities: ​ ​ ​ Depreciation and amortization ​ 5,704 ​ 6,192 Amortization of ROU operating leases ​ ​ 1,348 ​ ​ 1,673 Amortization of ROU finance leases ​ ​ 781 ​ ​ 700 Amortization of deferred debt issuance costs ​ ​ 239 ​ ​ 123 Deferred income taxes ​ 50 ​ 13 Stock-based compensation ​ 383 ​ 462 Gain on disposal of assets, net ​ ( 1,610 ) ​ ( 992 ) Allowance for credit losses ​ — ​ 411 Change in operating assets and liabilities: ​ ​ ​ ​ Accounts receivable ​ 3,837 ​ 13,511 Income tax receivable ​ — ​ ( 192 ) Inventory ​ 74 ​ ( 218 ) Prepaid expenses and other ​ 60 ​ 1,540 Contract assets ​ 10,474 ​ 9,956 Accounts payable ​ ( 9,735 ) ​ ( 22,911 ) Accrued liabilities ​ ( 2,371 ) ​ ( 543 ) Operating lease liabilities ​ ​ ( 1,196 ) ​ ​ ( 1,348 ) Income tax payable ​ 137 ​ ( 278 ) Contract liabilities ​ 15 ​ 4,631 Net cash provided by operating activities ​ 9,118 ​ 15,453 Cash flows from investing activities: ​ ​ Proceeds from sale of property and equipment ​ 1,950 ​ 1,302 Purchase of property and equipment ​ ( 1,618 ) ​ ( 2,753 ) Contributions to CSV life insurance ​ — ​ ( 38 ) Insurance claim proceeds related to property and equipment ​ ​ 440 ​ ​ 1,164 Net cash provided by (used in) investing activities ​ 772 ​ ( 325 ) Cash flows from financing activities: ​ ​ ​ ​ Borrowings from Credit Facility ​ 5,000 ​ 5,000 Payments made on borrowings from Credit Facility ​ ( 11,155 ) ​ ( 6,750 ) Payments of finance lease liabilities ​ ​ ( 732 ) ​ ​ ( 942 ) Payments related to tax withholding for stock-based compensation ​ ​ ( 36 ) ​ ​ — Exercise of stock options ​ 86 ​ — Net cash used in financing activities ​ ( 6,837 ) ​ ( 2,692 ) Net change in cash, cash equivalents and restricted cash ​ 3,053 ​ 12,436 Cash, cash equivalents and restricted cash at beginning of period ​ 1,589 ​ 1,086 Cash, cash equivalents and restricted cash at end of period ​ $ 4,642 ​ $ 13,522 ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 4,642 ​ $ 12,591 Restricted cash ​ ​ — ​ ​ 931 Total cash, cash equivalents and restricted cash shown above ​ $ 4,642 ​ $ 13,522 ​ ​ ​ ​ ​ ​ ​ Supplemental disclosures of cash flow information: ​ ​ Cash paid during the period for: ​ ​ Interest ​ $ 443 ​ $ 942 Taxes, net of refunds ​ $ ( 37 ) ​ $ 648 ​ The accompanying notes are an integral part of these condensed consolidated financial statements ​ 7 ​ Table of Contents Orion Group Holdings, Inc. and Subsidiaries Notes to Condensed Consolidated Financial Statements (Tabular Amounts in thousands, Except Share and per Share Amounts) (Unaudited) ​ 1. Description of Business and Basis of Presentation Description of Business Orion Group Holdings, Inc., its subsidiaries and affiliates (hereafter collectively referred to as the "Company"), provide a broad range of specialty construction services in the infrastructure, industrial, and building sectors of the continental United States, Alaska, Canada and the Caribbean Basin. The Company’s marine segment services the infrastructure sector through marine transportation facility construction, marine pipeline construction, marine environmental structures, dredging of waterways, channels and ports, environmental dredging, design, and specialty services. Its concrete segment services the building sector by providing turnkey concrete construction services including pour and finish, dirt work, layout, forming, rebar, and mesh across the light commercial, structural and other associated business areas. The Company is headquartered in Houston, Texas with offices throughout its operating areas. The tools used by the chief operating decision maker ("CODM") to allocate resources and assess performance are based on two reportable and operating segments: marine, which operates under the Orion brand and logo, and concrete, which operates under the TAS Commercial Concrete brand and logo. Although we describe the business in this report in terms of the services the Company provides, its base of customers and the areas in which it operates, the Company has determined that its operations currently comprise two reportable segments pursuant to Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 280, Segment Reporting . In making this determination, the Company considered the similar economic characteristics of its operations that comprise its marine segment. For the marine segment, the methods used, and the internal processes employed, to deliver marine construction services are similar throughout the segment, including standardized estimating, project controls and project management. This segment has the same customers with similar funding drivers, and it complies with regulatory environments driven through Federal agencies such as the U.S. Army Corps of Engineers, U.S. Fish and Wildlife Service, U.S. Environmental Protection Agency and U.S. Occupational Safety and Health Administration ("OSHA"), among others. Additionally, the segment is driven by macro-economic considerations including the level of import/export seaborne transportation, development of energy-related infrastructure, cruise line expansion and operations, marine bridge infrastructure development, waterway pipeline crossings and the maintenance of waterways. These considerations, and others, are key catalysts for future prospects and are similar across the segment. For the concrete segment, the Company also considered the similar economic characteristics of these operations. The methods used, and the internal processes employed, to deliver concrete construction services are similar throughout the segment, including standardized estimating, project controls and project management. This segment complies with regulatory environments such as OSHA. Additionally, this segment is driven by macro-economic considerations, including movements in population, commercial real estate development, institutional funding and expansion, and recreational development, specifically in metropolitan areas of Texas. These considerations, and others, are key catalysts for future prospects and are similar across the segment. 8 ​ Table of Contents Basis of Presentation The accompanying condensed consolidated financial statements and financial information included herein have been prepared pursuant to the interim period reporting requirements of Form 10-Q. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted. Readers of this report should also read the Company’s consolidated financial statements and the notes thereto included in its Annual Report on Form 10-K for the fiscal year ended December 31, 2020 (“2020 Form 10-K”) as well as Item 7 – Management’s Discussion and Analysis of Financial Condition and Results of Operations also included in its 2020 Form 10-K. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments considered necessary for a fair presentation of the Company’s financial position, results of operations, and cash flows for the periods presented. Such adjustments are of a normal recurring nature. Interim results of operations for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. ​ 2. Summary of Significant Accounting Policies The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management’s estimates, judgments and assumptions are continually evaluated based on available information and experience; however, actual amounts could differ from those estimates. On an ongoing basis, the Company evaluates the significant accounting policies used to prepare its condensed consolidated financial statements, including, but not limited to, those related to: ● Revenue recognition from construction contracts; ● Accounts receivable and allowance for credit losses; ● Property, plant and equipment; ● Leases; ● Finite and infinite-lived intangible assets, testing for indicators of impairment; ● Stock-based compensation; ● Income taxes; and ● Self-insurance Revenue Recognition The Company’s revenue is derived from contracts to provide marine construction, dredging, turnkey concrete services, and other specialty services. The Company’s projects are typically short in duration and usually span 9 ​ Table of Contents a period of less than one year. The Company determines the appropriate accounting treatment for each contract before work begins and generally records revenue on contracts over time. Performance obligations are promises in a contract to transfer distinct goods or services to the customer and are the unit of account under Topic 606. The Company’s contracts and related change orders typically represent a single performance obligation because the Company provides an integrated service and individual goods and services are not separately identifiable. Revenue is recognized over time because control is continuously transferred to the customer. For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation using its best estimate of the stand-alone selling price of each distinct good or service. Progress is measured by the percentage of actual contract costs incurred to date to total estimated costs for each contract. This method is used because management considers contract costs incurred to be the best available measure of progress on these contracts. Contract costs include all direct costs, such as material and labor, and those indirect costs incurred that are related to contract performance such as payroll taxes and insurance. General and administrative costs are charged to expense as incurred. Upfront costs, such as costs to mobilize personnel and equipment prior to satisfying a performance obligation are capitalized and amortized over the contract performance period. Changes in job performance, job conditions and estimated profitability, including those arising from final contract settlements, may result in revisions to costs and reported revenue and are recognized in the period in which the revisions are determined. The effect of changes in estimates of contract revenue or contract costs is recognized as an adjustment to recognized revenue on a cumulative catch-up basis. When losses on uncompleted contracts are anticipated, the entire loss is recognized in the period in which such losses are determined. Revenue is recorded net of any sales taxes collected and paid on behalf of the customer, if applicable. Contract revenue is derived from the original contract price as modified by agreed-upon change orders and estimates of variable consideration related to incentive fees and change orders or claims for which price has not yet been agreed by the customer. The Company estimates variable consideration based on its assessment of the most likely amount to which it expects to be entitled. Variable consideration is included in the estimated recognition of revenue to the extent it is probable that a significant reversal of cumulative recognized revenue will not occur. A determination that the collection of a claim is probable is based upon compliance with the terms of the contract and the extent to which the Company performed in accordance therewith but does not guarantee collection in full. Assets and liabilities derived from contracts with customers include the following: ● Accounts Receivable: Trade, net of allowance - Represent amounts billed and currently due from customers and are stated at their estimated net realizable value. ● Accounts Receivable: Retainage - Represent amounts which have not been billed to or paid by customers due to retainage provisions in construction contracts, which amounts generally become payable upon contract completion and acceptance by the customer. ● Contract Assets - Represent revenues recognized in excess of amounts billed, which management believes will be billed and collected within one year of the completion of the contract and are recorded as a current asset, until such amounts are either received or written off. ● Contract Liabilities - Represent billings in excess of revenues recognized and are recorded as a current liability, until the underlying obligation has been performed or discharged. 10 ​ Table of Contents ​ Classification of Current Assets and Liabilities The Company includes in current assets and liabilities amounts realizable and payable in the normal course of contract completion. Cash, Cash Equivalents and Restricted Cash The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. At times, cash held by financial institutions may exceed federally insured limits. The Company has not historically sustained losses on its cash balances in excess of federally insured limits. Cash equivalents at March 31, 2021 and December 31, 2020 consisted primarily of overnight bank deposits. The Company had no restricted cash as of March 31, 2021 and December 31, 2020. Risk Concentrations Financial instruments that potentially subject the Company to concentrations of credit risk principally consist of accounts receivable. The Company depends on its ability to continue to obtain federal, state and local governmental contracts, and indirectly, on the amount of funding available to these agencies for new and current governmental projects. Therefore, a portion of the Company’s operations is dependent upon the level and timing of government funding. Statutory mechanics liens provide the Company high priority in the event of lien foreclosures following financial difficulties of private owners, thus minimizing credit risk with private customers. Accounts Receivable Accounts receivable are stated at the historical carrying value, net of allowances for credit losses. The Company has significant investments in billed and unbilled receivables as of March 31, 2021 and December 31, 2020. Billed receivables represent amounts billed upon the completion of small contracts and progress billings on large contracts in accordance with contract terms and milestone achievements. Unbilled receivables on contracts, which are included in contract assets, arise as revenues are recognized over time. Unbilled amounts on contracts represent recoverable costs and accrued profits not yet billed. Revenue associated with these billings is recorded net of any sales tax, if applicable. Past due balances over 90 days and other higher risk amounts are reviewed individually for collectability. In establishing an allowance for credit losses, the Company evaluates its contract receivables and contract assets and thoroughly reviews historical collection experience, the financial condition of its customers, billing disputes and other factors. The Company writes off potentially uncollectible accounts receivable against the allowance for credit losses if it is determined that the amounts will not be collected or if a settlement is reached for an amount that is less than the carrying value. As of March 31, 2021, and December 31, 2020, the Company has recorded an allowance for credit losses of $ 0.3 million and $ 0.4 million, respectively. Balances billed to customers but not paid pursuant to retainage provisions in construction contracts generally become payable upon contract completion and acceptance by the owner. Retainage at March 31, 2021 totaled $ 38.0 million, of which $ 4.3 million is expected to be collected beyond March 31, 2022. Retainage at December 31, 2020 totaled $ 36.5 million. 11 ​ Table of Contents The Company negotiates change orders and claims with its customers. Unsuccessful negotiations of claims could result in a change to contract revenue that is less than amounts previously recorded, which could result in the recording of a loss in the amount of the shortfall. Successful claims negotiations could result in the recovery of previously recorded losses. Significant losses on receivables could adversely affect the Company’s financial position, results of operations and overall liquidity. Advertising Costs The Company primarily obtains contracts through the open bid process, and therefore advertising costs are not a significant component of expense. Advertising costs are expensed as incurred. Environmental Costs Costs related to environmental remediation are charged to expense. Other environmental costs are also charged to expense unless they increase the value of the property and/or provide future economic benefits, in which event the costs are capitalized. Environmental liabilities, if any, are recognized when the expenditure is considered probable and the amount can be reasonably estimated. The Company did not recognize any environmental liabilities as of March 31, 2021 or December 31, 2020. Fair Value Measurements The Company evaluates and presents certain amounts included in the accompanying condensed consolidated financial statements at “fair value” in accordance with U.S. GAAP, which requires the Company to base its estimates on assumptions that market participants, in an orderly transaction, would use to price an asset or liability, and to establish a hierarchy that prioritizes the information used to determine fair value. Refer to Note 8 for more information regarding fair value determination. The Company generally applies fair value valuation techniques on a non-recurring basis associated with (1) valuing assets and liabilities acquired in connection with business combinations and other transactions; (2) valuing potential impairment loss related to long-lived assets; and (3) valuing potential impairment loss related to goodwill and indefinite-lived intangible assets. Inventory Current inventory consists of parts and small equipment held for use in the ordinary course of business and is valued at the lower of cost (using historical average cost) or net realizable value. Where shipping and handling costs are incurred by the Company, these charges are included in inventory and charged to cost of contract revenue upon use. Non-current inventory consists of spare parts (including engines, cutters and gears) that require special order or long-lead times for manufacture or fabrication, but must be kept on hand to reduce downtime and is valued at the lower of cost (using historical average cost) or net realizable value. Property and Equipment Property and equipment are recorded at cost. Ordinary maintenance and repairs that do not improve or extend the useful life of the asset are expensed as incurred. Major renewals and betterments of equipment are capitalized and depreciated generally over three to seven years until the next scheduled maintenance. When property and equipment are retired or otherwise disposed of, the cost and accumulated depreciation are removed from the accounts and any resulting gain or loss is included in results of operations for the respective 12 ​ Table of Contents period. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets for financial statement purposes, as follows: ​ ​ ​ ​ Automobiles and trucks 3 to 5 years Buildings and improvements 5 to 30 years Construction equipment 3 to 15 years Vessels and other equipment 1 to 15 years Office equipment 1 to 5 years ​ The Company generally uses accelerated depreciation methods for tax purposes where appropriate. Dry-docking costs are capitalized and amortized using the straight-line method over a period ranging from three to 15 years . Dry-docking costs include, but are not limited to, the inspection, refurbishment and replacement of steel, engine components, tailshafts, mooring equipment and other parts of the vessel. Amortization related to dry-docking activities is included as a component of depreciation. These costs and the related amortization periods are periodically reviewed to determine if the estimates are accurate. If warranted, a significant upgrade of equipment may result in a revision to the useful life of the asset, in which case the change is accounted for prospectively. Property and equipment are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset or asset group may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are separately presented in the balance sheet and reported at the lower of the carrying amount or the fair value, less the costs to sell, and are no longer depreciated. There were no assets classified as held for sale as of March 31, 2021 or December 31, 2020. Leases Management determines if a contract is or contains a lease at inception of the contract or modification of the contract. A contract is or contains a lease if the contract conveys the right to control the use of an identified asset for a period in exchange for consideration. Control over the use of the identified asset means the lessee has both (a) the right to obtain substantially all of the economic benefits from the use of the asset and (b) the right to direct the use of the asset. Finance and operating lease ROU assets and liabilities are recognized based on the present value of future minimum lease payments over the expected lease term at commencement date. As the implicit rate is not determinable in most of the Company’s leases, management uses the Company’s incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The expected lease term includes options to extend or terminate the lease when it is reasonably certain the Company will exercise such option. Lease expense for minimum lease payments is recognized on a straight-line basis over the expected lease term. The Company’s lease arrangements have lease and non-lease components. Leases with an expected term of 12 months or less are not accounted for on the balance sheet and the related lease expense is recognized on a straight-line basis over the expected lease term. 13 ​ Table of Contents The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants. See Note 18 for more information regarding leases. Intangible Assets Intangible assets that have finite lives are amortized. In addition, the Company evaluates the remaining useful life of intangible assets in each reporting period to determine whether events and circumstances warrant a revision of the remaining period of amortization. If the estimate of an intangible asset’s remaining life is changed, the remaining carrying value of such asset is amortized prospectively over that revised remaining useful life. Intangible assets that have infinite lives are not amortized, but are subject to impairment testing at least annually or more frequently if events or circumstances indicate that the asset may be impaired. The Company has one infinite-lived intangible asset, a trade name, which it tests for impairment annually on October 31, or whenever events or circumstances indicate that the carrying amount of the trade name may not be recoverable. Impairment is calculated as the excess of the trade name’s carrying value over its fair value. The fair value of the trade name is determined using the relief from royalty method, a variation of the income approach. This method assumes that if a company owns intellectual property, it does not have to “rent” the asset and is, therefore, “relieved” from paying a royalty. Once a supportable royalty rate is determined, the rate is then applied to the projected revenues over the expected remaining life of the intangible assets to estimate the royalty savings. This approach is dependent on a number of factors, including estimates of future growth and trends, royalty rates, discount rates and other variables. See Note 9 for additional discussion of intangible assets and trade name impairment testing. Stock-Based Compensation The Company recognizes compensation expense for equity awards over the vesting period based on the fair value of these awards at the date of grant. The computed fair value of these awards is recognized as a non-cash cost over the period the employee provides services, which is typically the vesting period of the award. The fair value of options granted is estimated on the date of grant using the Black-Scholes option-pricing model. The Black-Scholes option-pricing model requires the use of subjective assumptions in the computation. Changes in these assumptions can cause significant fluctuations in the fair value of the option award. The fair value of restricted stock grants is equivalent to the fair value of the stock issued on the date of grant and is measured as the closing price of the stock on the date of grant. Compensation expense is recognized only for stock-based payments expected to vest. The Company estimates forfeitures at the date of grant based on historical experience and future expectations. This assessment is updated on a periodic basis. See Note 15 for further discussion of the Company’s stock-based compensation plan. Income Taxes The Company determines its consolidated income tax provision using the asset and liability method prescribed by U.S. GAAP, which requires the recognition of income tax expense for the amount of taxes payable or refundable for the current period and for deferred tax liabilities and assets for the future tax consequences of events that have been recognized in an entity’s financial statements or tax returns. The Company must make significant assumptions, judgments and estimates to determine its current provision for income taxes, its 14 ​ Table of Contents deferred tax assets and liabilities, and any valuation allowance to be recorded against any deferred tax asset. The current provision for income tax is based upon the current tax laws and the Company’s interpretation of these laws, as well as the probable outcomes of any tax audits. The value of any net deferred tax asset depends upon estimates of the amount and category of future taxable income reduced by the amount of any tax benefits that the Company does not expect to realize. Actual operating results and the underlying amount and category of income in future years could render current assumptions, judgments and estimates of recoverable net deferred taxes inaccurate, thus impacting the Company’s financial position and results of operations. The Company computes deferred income taxes using the liability method. Under the liability method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Under the liability method, the effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company accounts for uncertain tax positions in accordance with the provisions of ASC 740, Income Taxes which prescribes a recognition threshold and measurement attribute for financial statement disclosure of tax positions taken, or expected to be taken, on its consolidated tax return. The Company evaluates and records any uncertain tax positions based on the amount that management deems is more likely than not to be sustained upon examination and ultimate settlement with the tax authorities in the tax jurisdictions in which it operates. See Note 13 for additional discussion of income taxes. Insurance Coverage The Company maintains insurance coverage for its business and operations. Insurance related to property, equipment, automobile, general liability, and a portion of workers’ compensation is provided through traditional policies, subject to a deductible or deductibles. A portion of the Company’s workers’ compensation exposure is covered through a mutual association, which is subject to supplemental calls. The marine segment maintains five levels of excess loss insurance coverage, totaling $ 200 million in excess of primary coverage. The marine segment’s excess loss coverage responds to most of its policies when a primary limit of $ 1 million has been exhausted; provided that the primary limit for Contingent Maritime Employer’s Liability is $ 10 million and the Watercraft Pollution Policy primary limit is $ 5 million. The concrete segment maintains five levels of excess loss insurance coverage, totaling $ 200 million in excess of primary coverage. The concrete segment’s excess loss coverage responds to most of its policies when a primary limit of $ 1 million has been exhausted. If a claim arises and a potential insurance recovery is probable, the impending gain is recognized separately from the related loss. The recovery will only be recognized up to the amount of the loss once the recovery of the claim is deemed probable and any excess gain will fall under contingency accounting and will only be recognized once it is realized. The Company does not net insurance recoveries against the related claim liability as the amount of the claim liability is determined without consideration of the anticipated insurance recoveries from third parties. Separately, the Company’s marine segment employee health care is paid for by general assets of the Company and currently administered by a third party. The administrator has purchased appropriate stop-loss coverage. Losses on these policies up to the deductible amounts are accrued based upon known claims incurred and an estimate of claims incurred but not reported. The accruals are derived from known facts, historical trends and 15 ​ Table of Contents industry averages to determine the best estimate of the ultimate expected loss. Actual claims may vary from estimates. Any adjustments to such reserves are included in the Condensed Consolidated Results of Operations in the period in which they become known. The Company’s concrete segment employee health care is provided through two policies. A fully funded policy is offered primarily to salaried employees and their dependents while a partially self-funded plan with an appropriate stop-loss is offered primarily to hourly employees and their dependents. The self-funded plan is funded to the maximum exposure and, as a result, is expected to receive a partial refund after the policy expiration. The total accrual for insurance claims liabilities was $ 59.2 million and $ 60.4 million at March 31, 2021 and December 31, 2020, respectively, reflected as a component of accrued liabilities in the condensed consolidated balance sheet. The total accrual for insurance claims receivable was $ 54.9 million and $ 57.0 million at March 31, 2021 and December 31, 2020, respectively, reflected as a component of other current accounts receivable in the condensed consolidated balance sheet. Accounting Standards Adopted in 2021 The Financial Accounting Standards Board (“FASB”) issues accounting standards and updates (each, an "ASU") from time to time to its Accounting Standards Codification (‘ASC’), which is the primary source of U.S. GAAP. The Company regularly monitors ASUs as they are issued and considers applicability to its business. All ASUs are adopted by their respective due dates and in the manner prescribed by the FASB. In December 2019, the FASB issued ASU 2019-12, Income Taxes: Simplifying the Accounting for Income Taxes (Topic 740). This standard simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in Topic 740 related to the approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The standard also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020 and interim periods within that year. 3. Revenue Contract revenues are recognized when control of the promised goods or services is transferred to the customer in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The following table represents a disaggregation of the Company’s contract revenues by service line for the marine and concrete segments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2021 2020 Marine Segment ​ ​ Construction ​ $ 43,936 ​ $ 53,140 Dredging ​ 24,682 ​ 30,899 Specialty Services ​ 3,528 ​ 1,910 Marine segment contract revenues ​ $ 72,146 ​ $ 85,949 ​ ​ ​ ​ ​ ​ ​ Concrete Segment ​ ​ Structural ​ $ 16,661 ​ $ 21,236 Light Commercial ​ 64,495 ​ 59,433 Other ​ 7 ​ 2 Concrete segment contract revenues ​ $ 81,163 ​ $ 80,671 16 ​ Table of Contents ​ ​ ​ ​ ​ ​ ​ Total contract revenues ​ $ 153,309 ​ $ 166,620 ​ The Company has determined that it has two reportable segments pursuant to FASB ASC Topic 280, Segment Reporting , but has disaggregated its contract revenues in the above chart in terms of services provided within such segments. In making this determination, the Company considered the similar characteristics of its operations as discussed in Note 1. Additionally, as discussed, both the marine and concrete segments have limited contracts with multiple performance obligations. The Company’s contracts are often estimated and bid as one project and evaluated as to performance as one project, not by individual services performed by each. Both the marine and concrete segments have a single Executive Vice President responsible for the entire segment, not by service lines of the segments. Resources are allocated by segment and financial and budgetary information is compiled and reviewed by segment, not service line. Marine Segment Construction services include construction, restoration, maintenance, dredging and repair of marine transportation facilities, marine pipelines, bridges and causeways and marine environmental structures. Dredging services generally enhance or preserve the navigability of waterways or the protection of shorelines through the removal or replenishment of soil, sand or rock. Specialty services include design, salvage, demolition, surveying, towing, diving and underwater inspection, excavation and repair. Concrete Segment Structural services include elevated concrete pouring for products such as columns, elevated beams and structural walls. Light commercial services include horizontally poured concrete for products such as sidewalks, ramps, tilt walls and trenches. Other services comprise labor related to concrete pouring such as rebar installation and pumping services and typically support the Company’s structural and light commercial services. ​ 4. Concentration of Risk and Enterprise Wide Disclosures Accounts receivable in both reportable segments include amounts billed to governmental agencies and private customers and do not bear interest. Balances billed to customers but not paid pursuant to retainage provisions generally become payable upon contract completion and acceptance by the owner. ​ The table below presents the concentrations of accounts receivable from customers (trade and retainage) at March 31, 2021 and December 31, 2020, respectively: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ December 31, 2020 Federal Government $ 4,341 3 % $ 4,826 4 % State Governments ​ 220 - % — - % Local Governments ​ 22,444 17 % 17,823 13 % Private Companies ​ 103,914 79 % 110,616 83 % Gross receivables ​ ​ 130,919 ​ 99 % ​ 133,265 ​ 100 % Allowance for credit losses ​ ​ ( 323 ) ​ ​ ​ ​ ( 411 ) ​ ​ ​ Net receivables ​ $ 130,596 ​ ​ $ 132,854 ​ ​ ​ 17 ​ Table of Contents At March 31, 2021 one customer in the Private Companies category accounted for 10.6 % of total current receivables. At December 31, 2020, no single customer accounted for more than 10.0% of total current receivables. Additionally, the table below represents concentrations of contract revenue by type of customer for the three months ended March 31, 2021 and 2020, respectively: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2021 % 2020 % Federal Government $ 12,764 8 % $ 5,319 3 % State Governments 168 - % 12,232 7 % Local Government 33,516 22 % 52,012 31 % Private Companies 106,861 70 % 97,057 59 % Total contract revenues $ 153,309 100 % $ 166,620 100 % ​ In the three months ended March 31, 2021 and 2020, no single customer exceeded 10.0% of total contract revenues. The Company does not believe that the loss of any one of its customers would have a material adverse effect on the Company or its subsidiaries and affiliates since no single specific customer sustains such a large portion of receivables or contract revenue over time. The concrete segment primarily purchases concrete from select suppliers. The loss of any one of these suppliers could adversely impact short-term operations. Contract revenues generated outside the United States totaled 1.6 % and 2.4 % of total revenues for the three months ended March 31, 2021 and 2020, and were primarily located in the Caribbean Basin and Mexico. ​ 5. Contracts in Progress Contracts in progress are as follows at March 31, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, December 31, ​ ​ 2021 ​ 2020 Costs incurred on uncompleted contracts ​ $ 1,255,413 ​ $ 1,151,987 Estimated earnings ​ 228,140 ​ 202,369 ​ ​ 1,483,553 ​ 1,354,356 Less: Billings to date ​ ( 1,494,906 ) ​ ( 1,355,220 ) ​ ​ $ ( 11,353 ) ​ $ ( 864 ) Included in the accompanying Condensed Consolidated Balance Sheets under the following captions: ​ ​ Contract assets ​ $ 21,797 ​ $ 32,271 Contract liabilities ​ ( 33,150 ) ​ ( 33,135 ) ​ ​ $ ( 11,353 ) ​ $ ( 864 ) ​ Included in contract assets is approximately $ 3.6 million and $ 3.1 million at March 31, 2021 and December 31, 2020, respectively, related to claims and unapproved change orders. See Note 2 - Summary of Significant 18 ​ Table of Contents Accounting Policies to the Company’s condensed consolidated financial statements for discussion of the accounting for these claims. Remaining performance obligations represent the transaction price of firm orders or other written contractual commitments from customers for which work has not been performed or is partially completed and excludes unexercised contract options and potential orders. As of March 31, 2021, the aggregate amount of the remaining performance obligations was approximately $ 364.8 million. Of this amount, the current expectation of the Company is that it will recognize $ 328.6 million, or 90 %, in the next 12 months and the remaining balance thereafter. ​ 6. Property and Equipment The following is a summary of property and equipment at March 31, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, December 31, ​ ​ 2021 ​ 2020 Automobiles and trucks ​ $ 2,722 ​ $ 2,379 Building and improvements ​ 44,325 ​ 44,324 Construction equipment ​ 135,485 ​ 142,661 Vessels and other equipment ​ 80,686 ​ 79,499 Office equipment ​ 5,947 ​ 5,577 ​ ​ 269,165 ​ 274,440 Less: Accumulated depreciation ​ ( 185,883 ) ​ ( 186,615 ) Net book value of depreciable assets ​ 83,282 ​ 87,825 Construction in progress ​ 1,734 ​ 1,809 Land ​ 35,863 ​ 35,863 ​ ​ $ 120,879 ​ $ 125,497 ​ For the three months ended March 31, 2021 and 2020, depreciation expense was $ 5.3 million and $ 5.7 million, respectively. Substantially all depreciation expense is included in the cost of contract revenue in the Company’s Condensed Consolidated Statements of Operations. Substantially all of the assets of the Company are pledged as collateral under the Company’s Credit Agreement (as defined in Note 11 ). Substantially all of the Company’s long-lived assets are located in the United States. See Note 2 to the Company’s condensed consolidated financial statements for further discussion of property and equipment. ​ 7. Other Current Accounts Receivable Other current accounts receivable at March 31, 2021 and December 31, 2020 consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 December 31, 2020 Insurance claims receivable ​ $ 54,922 ​ $ 57,021 Accident loss receivables ​ 1,206 ​ 1,448 Other current receivables ​ ​ 1,025 ​ 1,023 Total other current accounts receivable ​ $ 57,153 ​ $ 59,492 ​ 19 ​ Table of Contents ​ ​ 8. Fair Value Recurring Fair Value Measurements The fair value of financial instruments is the amount at which the instrument could be exchanged in a current transaction between willing parties. Due to their short-term nature, the Company believes that the carrying value of its accounts receivable, other current assets, accounts payable and other current liabilities approximate their fair values. The Company classifies financial assets and liabilities into the following three levels based on the inputs used to measure fair value in the order of priority indicated: ● Level 1- fair values are based on observable inputs such as quoted prices in active markets for identical assets or liabilities; ● Level 2 - fair values are based on pricing inputs other than quoted prices in active markets for identical assets and liabilities and are either directly or indirectly observable as of the measurement date; and ● Level 3- fair values are based on unobservable inputs in which little or no market data exists. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value requires judgment and may affect the placement of assets and liabilities within the fair value hierarchy levels. The following table sets forth by level within the fair value hierarchy the Company’s recurring financial assets and liabilities that were accounted for at fair value on a recurring basis as of March 31, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements ​ Carrying Value Level 1 Level 2 Level 3 March 31, 2021 ​ ​ ​ ​ ​ Assets: ​ Cash surrender value of life insurance policy ​ $ 3,256 — 3,256 — Liabilities: ​ Derivatives ​ $ 1,372 — 1,372 — December 31, 2020 ​ ​ ​ ​ ​ Assets: ​ Cash surrender value of life insurance policy ​ $ 3,169 — 3,169 — Liabilities: ​ Derivatives ​ $ 1,602 — 1,602 — ​ The Company’s derivatives, which are comprised of interest rate swaps, are valued using a discounted cash flow analysis that incorporates observable market parameters, such as interest rate yield curves and credit risk adjustments that are necessary to reflect the probability of default by us or the counterparty. These derivatives are classified as a Level 2 measurement within the fair value hierarchy. See Note 11 for additional information on the Company’s derivative instrument. 20 ​ Table of Contents Our concrete segment has life insurance policies with a combined face value of $ 11.1 million as of March 31, 2021. The policies are invested in mutual funds and the fair value measurement of the cash surrender balance associated with these policies is determined using Level 2 inputs within the fair value hierarchy and will vary with investment performance. These assets are included in the "Other noncurrent" asset section in the Company’s Condensed Consolidated Balance Sheets. Non-Recurring Fair Value Measurements The Company generally applies fair value valuation techniques on a non-recurring basis associated with (1) valuing assets and liabilities acquired in connection with business combinations and other transactions; (2) valuing potential impairment loss related to long-lived assets; and (3) valuing potential impairment loss related to the infinite-lived intangible asset. Other Fair Value Measurements The fair value of the Company’s debt at March 31, 2021 and December 31, 2020 approximated its carrying value of $ 28.9 million and $ 35.1 million, respectively, as interest is based on current market interest rates for debt with similar risk and maturity. If the Company’s debt was measured at fair value, it would have been classified as Level 2 in the fair value hierarchy. ​ 9. Goodwill and Intangible Assets Intangible assets The tables below present the activity and amortizations of finite-lived intangible assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, December 31, ​ ​ 2021 ​ 2020 Finite-lived intangible assets, beginning of period ​ $ 35,240 ​ $ 35,240 Additions ​ — ​ — Total finite-lived intangible assets, end of period ​ $ 35,240 ​ $ 35,240 ​ ​ ​ ​ ​ ​ ​ Accumulated amortization, beginning of period ​ $ ( 32,055 ) ​ $ ( 29,985 ) Current year amortization ​ ( 380 ) ​ ( 2,070 ) Total accumulated amortization ​ ( 32,435 ) ​ ( 32,055 ) ​ ​ ​ ​ ​ ​ ​ Net finite-lived intangible assets, end of period ​ $ 2,805 ​ ​ 3,185 Infinite-lived intangible assets ​ ​ 6,892 ​ ​ 6,892 Total net intangible assets ​ $ 9,697 ​ $ 10,077 ​ Remaining net finite-lived intangible assets were acquired as part of the purchase of TAS during 2015 and TBC during 2017 and included customer relationships. Customer relationships were valued at approximately $ 18.8 million and are being amortized over eight years using an accelerated method based on the pattern in which the economic benefits of the assets are consumed. For the three months ended March 31, 2021, $ 0.4 million of amortization expense was recognized for these assets. 21 ​ Table of Contents Future expense remaining of approximately $ 2.8 million will be amortized as follows: ​ ​ ​ ​ ​ 2021 ​ 1,140 2022 ​ 1,239 2023 ​ 389 2024 ​ 37 ​ ​ $ 2,805 ​ Additionally, the Company has one indefinite-lived intangible asset, a trade name, which is tested for impairment annually on October 31, or whenever events or circumstances indicate that the carrying amount of the trade name may not be recoverable. Impairment is calculated as the excess of the trade name’s carrying value over its fair value. The fair value of the trade name is determined using the relief from royalty method, a variation of the income approach. This method assumes that if a company owns intellectual property it does not have to "rent" the asset and is, therefore, "relieved" from paying a royalty. Once a supportable royalty rate is determined, the rate is then applied to the projected revenues over the expected remaining life of the intangible assets to estimate the royalty savings. This approach is dependent on a number of factors, including estimates of future growth and trends, royalty rates, discount rates and other variables. The most recent annual impairment test concluded that the fair value of the trade name was in excess of the carrying value, therefore no impairment was recorded. ​ 10. Accrued Liabilities Accrued liabilities at March 31, 2021 and December 31, 2020 consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 December 31, 2020 Accrued salaries, wages and benefits ​ $ 11,434 ​ $ 15,071 Accrual for insurance claims liabilities ​ 59,208 ​ 60,365 Sales taxes ​ 4,318 ​ 5,909 Property taxes ​ 482 ​ 908 Sale-leaseback arrangement ​ ​ 821 ​ ​ 676 Accounting and audit fees ​ ​ 258 ​ ​ 344 Interest ​ 22 ​ 22 Equipment purchase ​ ​ 115 ​ ​ 461 Other accrued expenses ​ 1,043 ​ 881 Total accrued liabilities ​ $ 77,701 ​ $ 84,637 ​ ​ ​ 11. Long-term Debt and Line of Credit The Company entered into an amended syndicated credit agreement (the “Credit Agreement” also known as the “Fourth Amendment”) on July 31, 2018 with Regions Bank, as administrative agent and collateral agent, and the following co-syndication agents: Bank of America, N.A., BOKF, NA dba Bank of Texas, KeyBank National Association, NBH Bank, IBERIABANK, Trustmark National Bank, First Tennessee Bank NA, and Branch Banking and Trust Company. The Credit Facility matures on July 31, 2023. The Credit Agreement, which may be amended from time to time, provides for borrowings under a revolving line of credit and a term loan (together, the “Credit Facility”). The Credit Facility is guaranteed by the subsidiaries of the Company, secured by the assets of the Company, including stock held in its subsidiaries, 22 ​ Table of Contents and may be used to finance general corporate and working capital purposes, to finance capital expenditures, to refinance existing indebtedness, to finance permitted acquisitions and associated fees, and to pay for all related expenses to the Credit Facility. Interest is due and is computed based on the designation of the loan, with the option of a Base Rate Loan (the base rate plus the Applicable Margin), or an Adjusted LIBOR Rate Loan (the adjusted LIBOR rate plus the Applicable Margin). Interest is due on the last day of each quarter end for Base Rate Loans and at the end of the LIBOR rate period for Adjusted LIBOR Rate Loans. Principal balances drawn under the Credit Facility may be prepaid at any time, in whole or in part, without premium or penalty. Amounts repaid under the revolving line of credit may be re-borrowed. Total debt issuance costs for the Fourth Amendment, which included underwriter fees, legal fees and syndication fees were approximately $ 0.9 million and were capitalized as non-current deferred charges and amortized using the effective interest rate method over the duration of the loan. Additionally, the Company executed the Fifth Amendment during March 2019, which was made effective as of December 31, 2018, and executed the Sixth Amendment during May 2019. The Company incurred additional debt issuance costs of approximately $ 0.6 million and $ 0.9 million respectively for the Fifth and Sixth Amendments. With the execution of the aforementioned Sixth Amendment, $ 50.0 million of the existing revolving line of credit was modified and accounted for under guidelines of ASC 470-50, Debt, Modifications and Extinguishments, and a pro-rated portion of unamortized debt issuance costs of approximately $ 0.4 million was recognized as interest expense as of May 2019. The remaining debt issuance costs of approximately $ 0.9 million related to the Fourth, Fifth, and Sixth Amendments will be amortized over the duration of the loan. The Company entered into a new syndicated credit agreement (the “364-Day Revolving Credit Facility”) on June 8, 2020 with Regions Bank, as administrative agent and collateral agent, and the following co-syndication agents: Bank of America, N.A. and BOKF, NA dba Bank of Texas. Concurrent with this the Company executed an amendment to the Credit Agreement with its existing lenders (“also known as the “Seventh Amendment”) for the sole intent and outcome of executing the 364-Day Revolving Credit Facility. The 364-Day Revolving Credit Facility, which may be amended from time to time, provides for borrowings under a new revolving line of credit. The 364-Day Revolving Credit Facility is guaranteed by the subsidiaries of the Company, secured by the assets of the Company, including stock held in its subsidiaries, and may be used to finance general corporate and working capital purposes, to finance Permitted Acquisitions, and to pay transaction fees, costs and expenses related to the consummation of the Seventh Amendment. Interest is due and is computed based on the designation of the loan, with the option of a Base Rate Loan (the base rate plus the Applicable Margin), or an Adjusted LIBOR Rate Loan (the adjusted LIBOR rate plus the Applicable Margin). Interest is due on the last day of each quarter end for Base Rate Loans and at the end of the LIBOR rate period for Adjusted LIBOR Rate Loans. Principal balances drawn under the 364- Day Revolving Credit Facility may be prepaid at any time, in whole or in part, without premium or penalty. Amounts repaid under the 364-Day Revolving Credit Facility may be re-borrowed. The 364-Day Revolving Credit Facility matures on June 7, 2021. Total debt issuance costs for the 364-Day Revolving Credit Facility, which included underwriter fees, legal fees and syndication fees were approximately $ 0.4 million and were capitalized as current deferred charges and will be amortized over the duration of the loan. To date the Company has had no borrowings under the 364-Day Revolving Credit Facility. Effective, October 9, 2020, the Company entered into an amendment (the "Eighth Amendment") to its syndicated credit agreement (the "Credit Agreement" , with Regions Bank, as Administrative Agent and Collateral Agent and Bank of America, N.A., BOKF, NA dba Bank of Texas, Iberiabank, NBH Bank, Truist 23 ​ Table of Contents Bank, and Trustmark National Bank, as Lenders. The Eighth Amendment provides for administrative revisions to the Credit Agreement, including changes to repayment requirements for involuntary asset dispositions and changes to the timing of repayment for voluntary asset dispositions. The quarterly weighted average interest rate for the Credit Facility as of March 31, 2021 was 2.48 %. The Company’s obligations under debt arrangements consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 ​ December 31, 2020 ​ ​ Debt Issuance ​ ​ Debt Issuance ​ ​ ​ Principal ​ Costs (1) ​ Total ​ Principal ​ Costs (1) ​ Total Term loan - current ​ $ 4,500 ​ $ ( 152 ) ​ $ 4,348 ​ $ 4,500 ​ $ ( 156 ) ​ $ 4,344 Total current debt ​ 4,500 ​ ( 152 ) ​ 4,348 ​ 4,500 ​ ( 156 ) ​ 4,344 Revolving line of credit ​ — ​ — ​ — ​ 5,000 ​ ( 174 ) ​ 4,826 Term loan - long-term ​ 24,431 ​ ( 828 ) ​ 23,603 ​ 25,586 ​ ( 889 ) ​ 24,697 Total long-term debt ​ ​ 24,431 ​ ​ ( 828 ) ​ ​ 23,603 ​ ​ 30,586 ​ ​ ( 1,063 ) ​ ​ 29,523 Total debt ​ $ 28,931 ​ $ ( 980 ) ​ $ 27,951 ​ $ 35,086 ​ $ ( 1,219 ) ​ $ 33,867 ​ (1) Total debt issuance costs include underwriter fees, legal fees and syndication fees and fees related to the execution of the Fourth, Fifth, Sixth, Seventh and Eighth Amendments to the Credit Agreement. Provisions of the revolving line of credit The Company has a maximum borrowing availability under the revolving line of credit and swingline loans (as defined in the Credit Agreement) of $ 50.0 million. There is a letter of credit sublimit that is equal to the lesser of $ 20.0 million and the aggregate unused amount of the revolving commitments then in effect. There is also a swingline sublimit equal to the lesser of $ 5.0 million and the aggregate unused amount of the revolving commitments then in effect. Revolving loans may be designated as Base Rate Loan or Adjusted LIBOR Rate Loans, at the Company’s request, and must be drawn in an aggregate minimum amount of $ 1.0 million and integral multiples of $ 250,000 in excess of that amount. Swingline loans must be drawn in an aggregate minimum amount of $ 250,000 and integral multiples of $ 50,000 in excess of that amount. The Company may convert, change, or modify such designations from time to time. The Company is subject to a commitment fee for the unused portion of the maximum borrowing availability under the revolving line of credit. The commitment fee, which is due quarterly in arrears, is equal to the Applicable Margin of the actual daily amount by which the Aggregate Revolving Commitments exceeds the Total Revolving Outstanding. The revolving line of credit termination date is the earlier of the Credit Facility termination date, July 31, 2023, or the date the outstanding balance is permanently reduced to zero, in accordance with the terms of the amended Credit Facility. The maturity date for amounts drawn under the revolving line of credit is the earlier of the Facility termination date of July 31, 2023, or the date the outstanding balance is permanently reduced to zero. As of March 31, 2021 the Company had no borrowing under the revolving line of credit. There were $ 1.7 million in outstanding letters of credit as of March 31, 2021, which reduced the maximum borrowing availability on the revolving line of credit to $ 48.3 million. During the three months ended March 31, 2021, the 24 ​ Table of Contents Company drew down $ 5.0 million for general corporate purposes and made payments of $ 10.0 million on the revolving line of credit which resulted in a net decrease of $ 5.0 million. Provisions of the 364-day revolving credit facility The Company has a maximum borrowing availability under the 364-Day Revolving Credit Facility of $ 20.0 million. Borrowings may be designated as Base Rate Loan or Adjusted LIBOR Rate Loans, at the Company’s request, and must be drawn in an aggregate minimum amount of $ 1.0 million and integral multiples of $ 250,000 in excess of that amount. The Company may convert, change, or modify rate designations from time to time. The Company is subject to a commitment fee for the unused portion of the maximum borrowing availability under the 364-Day Revolving Credit Facility. The commitment fee, which is due quarterly in arrears, is equal to the Applicable Margin of the actual daily amount by which the Aggregate Revolving Commitments exceeds the Total Revolving Outstanding. As of March 31, 2021, there were no outstanding borrowings under the 364-Day Revolving Credit Facility. Provisions of the term loan The original principal amount of $ 60.0 million for the term loan commitment is paid off in quarterly installment payments (as stated in the Credit Agreement). At March 31, 2021, the outstanding term loan component of the Credit Facility totaled $ 28.9 million and was secured by specific assets of the Company. The table below outlines the total remaining payment amounts annually for the term loan through maturity of the Credit Facility: ​ ​ ​ ​ ​ 2021 ​ 3,375 2022 ​ ​ 5,250 2023 ​ ​ 20,306 ​ ​ $ 28,931 ​ During the three months ended March 31, 2021 the Company made the scheduled quarterly principal payment of $ 1.2 million, which reduced the outstanding principal balance to $ 28.9 million as of March 31,2021. The current portion of debt is $ 4.5 million, and the non-current portion is $ 24.4 million. As of March 31, 2021, the term loan was designated as an Adjusted LIBOR Rate Loan with an interest rate of 2.38 %. Financial covenants Restrictive financial covenants under the Credit Facility include: ● A consolidated Fixed Charge Coverage Ratio to not be less than the following during each noted period: - Fiscal Quarter Ending December 31, 2019 and each Fiscal Quarter thereafter, to not be less than 1.25 to 1.00. ● A consolidated Leverage Ratio to not exceed the following during each noted period: - Fiscal Quarter Ending March 31, 2020 and each Fiscal Quarter thereafter, to not exceed 3.00 to 1.00. ​ 25 ​ Table of Contents In addition, the Credit Facility contains events of default that are usual and customary for similar arrangements, including non-payment of principal, interest or fees; breaches of representations and warranties that are not timely cured; violation of covenants; bankruptcy and insolvency events; and events constituting a change of control. The Company was in compliance with all financial covenants as of March 31, 2021. Derivative Financial Instruments On September 16, 2015, the Company entered into a series of receive-variable, pay-fixed interest rate swaps to hedge the variability in the interest payments on 50 % of the aggregate principal amount of the Regions Term Loan outstanding, beginning with a notional amount of $ 67.5 million. There was a total of five sequential interest rate swaps to achieve the hedged position and each year on August 31, with the exception of the final swap, the existing interest rate swap was scheduled to expire and be immediately replaced with a new interest rate swap until the expiration of the final swap on July 31, 2020. On December 6, 2018, the Company entered into a sixth receive-variable, pay-fixed interest rate swap to hedge the variability of interest payments. The sixth swap began with a notional amount of $ 27.0 million on July 31, 2020 and hedges the variability in the interest payments on the aggregate scheduled principal amount of the Regions Term Loan outstanding. The sixth swap is scheduled to expire on July 31, 2023. At inception, these interest rate swaps were designated as cash flow hedges for hedge accounting, and as such, the effective portion of unrealized changes in market value are recorded in other comprehensive income (loss) and reclassified into earnings during the period in which the hedged forecasted transaction affects earnings. Gains and losses from hedge ineffectiveness are recognized in current earnings. The change in fair market value of the swaps for the comparative periods ended March 31, 2021 and March 31, 2020, as reflected in accumulated other comprehensive loss in the Condensed Consolidated Statements of Stockholders’ Equity, is approximately $( 0.2 ) million and $ 1.0 million. The fair market value of the swaps as of March 31, 2021 is reflected as a liability of $ 1.4 million on the Condensed Consolidated Balance Sheets. See Note 8 for more information regarding the fair value of the Company’s derivative instruments. ​ 26 ​ Table of Contents 12. Other Long-Term Liabilities Other long-term liabilities at March 31, 2021 and December 31, 2020 consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2021 December 31, 2020 Sale-leaseback arrangement ​ $ 16,532 ​ $ 16,712 CARES Act deferred payroll taxes ​ ​ 3,821 ​ ​ — Deferred compensation ​ 2,853 ​ 2,818 Accrual for insurance claims liabilities ​ ​ 307 ​ 307 Total other long-term liabilities ​ $ 23,513 ​ $ 19,837 ​ Sale-Leaseback Arrangement On September 27, 2019, the Company entered into a purchase and sale agreement (the “Purchase and Sale Agreement”). Pursuant to the terms of the Purchase and Sale Agreement, the Company sold its 17300 & 17140 Market Street location in Channelview, Texas (the “Property”) for a purchase price of $ 19.1 million. Concurrent with the sale of the Property, the Company entered into a fifteen-year lease agreement (the “Lease Agreement”), whereby the Company will lease back the Property at an annual rental rate of approximately $ 1.5 million, subject to annual rent increases of 2.0 % . Under the Lease Agreement, the Company has two consecutive options to extend the term of the Lease by ten years for each such option. This transaction was recorded as a failed sale-leaseback. The Company recorded a liability for the amounts received, will continue to depreciate the non-land portion of the asset, and has imputed an interest rate so that the net carrying amount of the financial liability and remaining assets will be zero at the end of the initial lease term. Concurrently with the sale, the Company paid $ 18.2 million towards the Term loan portion of the Company’s Credit Facility, consistent with terms of the Sixth Amendment. CARES Act On March 27, 2020, the U.S. government enacted the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) which among other things includes an optional payment deferral of the employer's portion of the Social Security taxes that were otherwise due through December 31, 2020. The Company elected to defer payments of approximately $ 7.6 million with $ 3.8 million due December 2021 reflected in accrued liabilities included in the Company’s Condensed Consolidated Balance Sheets and the remaining $ 3.8 million due December 2022 reflected in other long-term liabilities in the Company’s Condensed Consolidated Balance Sheets. 13. Income Taxes The Company’s effective tax rate is based on expected income, statutory rates and tax planning opportunities available to it. For interim financial reporting, the Company estimates its annual tax rate based on projected taxable income for the full year and records a quarterly tax provision in accordance with the anticipated annual rate. 27 ​ Table of Contents Income tax expense included in the Company’s accompanying Condensed Consolidated Statements of Operations was as follows (in thousands, except percentages): ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, ​ ​ ​ 2021 ​ ​ 2020 Income tax expense $ 150 ​ $ 377 ​ Effective tax rate 13.9 % 12.2 % ​ The effective rate for the three months ended March 31, 2021 differed from the Company’s statutory federal rate of 21 % primarily due to the movement in the valuation allowance for current year activity, state income taxes and the non-deductibility of other permanent items. During the year ended December 31, 2020 the Company assessed the realizability of its deferred tax assets and determined that it was more likely than not that some portion or all the deferred tax assets would not be realized and therefore recorded a valuation allowance on the net deferred tax assets. The Company assesses the available positive and negative evidence to estimate if sufficient future taxable income will be generated to use the existing deferred tax assets. The Company considers the scheduled reversal of deferred tax liabilities, available carryback periods, and tax-planning strategies in making this assessment. For the period ended March 31, 2021 the Company evaluated all positive and negative evidence in determining the amount of deferred tax assets more likely than not to be realized. Based on the review of available evidence, Management believes that a valuation allowance on the net deferred tax assets at March 31, 2021 remains appropriate. The Company does not expect that unrecognized tax benefits as of March 31, 2021 for certain federal income tax matters will significantly change due to any settlement and/or expiration of statutes of limitations over the next 12 months. The final outcome of these tax positions is not yet determinable. The Company’s uncertain tax benefits, if recognized, would affect the Company’s effective tax rate. ​ ​ 14. Earnings Per Share Basic earnings per share is based on the weighted average number of common shares outstanding during each period. Diluted earnings per share is based on the weighted average number of common shares outstanding as well as the effect of all dilutive common stock equivalents during each period net income is generated. For the three months ended March 31, 2021 and 2020, the Company had 915,489 and 1,458,225 securities, respectively, that were potentially dilutive in earnings per share calculations. Such dilution is dependent on the excess of the market price of our stock over the exercise price and other components of the treasury stock method. The exercise price for certain stock options awarded by the Company exceeded the average market price of the Company’s common stock for the three months ended March 31, 2021 and 2020. Such stock options are antidilutive and are not included in the computation of earnings per share for those periods. 28 ​ Table of Contents The following table reconciles the denominators used in the computations of both basic and diluted earnings per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2021 2020 Basic: Weighted average shares outstanding 30,465,475 29,653,409 Diluted: Total basic weighted average shares outstanding 30,465,475 29,653,409 Effect of potentially dilutive securities: Common stock options 34,503 2,148 Total weighted average shares outstanding assuming dilution 30,499,978 29,655,557 ​ ​ ​ 15. Stock-Based Compensation The Compensation Committee of the Company’s Board of Directors is responsible for the administration of the Company’s stock incentive plans, which include the balance of shares remaining under the 2011 Long Term Incentive Plan (the "2011 LTIP") and 2017 Long Term Incentive Plan (the "2017 LTIP"), which was approved by shareholders in May 2017 and authorized the maximum aggregate number of shares to be issued of 2,400,000 . In general, the Company’s 2017 LTIP provides for grants of restricted stock and stock options to be issued with a per-share price equal to the fair market value of a share of common stock on the date of grant. Option terms are specified at each grant date but generally are 10 years from the date of issuance. Options generally vest over a three to five-year period. The Company applies a 3.2 % and a 5.5 % forfeiture rate, which is compounded over the vesting terms of the individual award, to its restricted stock and option grants, respectively, based on historical analysis. In the three months ended March 31, 2021 and 2020, compensation expense related to stock-based awards outstanding was $ 0.4 million and $ 0.5 million, respectively. In the three months ended March 31, 2021 and 2020, payments related to tax withholding for stock-based compensation for certain officers and directors of the Company was less than $ 0.1 million and none , respectively. In the three months ended March 31, 2021, there were 23,755 options exercised generating proceeds to the Company of approximately $ 0.1 million. In the three months ended March 31, 2020, there were no options exercised. At March 31, 2021, total unrecognized compensation expense related to unvested stock and options was approximately $ 2.0 million, which is expected to be recognized over a period of approximately two years . 16. Commitments and Contingencies On August 21, 2020, a Company dredge, the Waymon L. Boyd, was consumed by a fire while working on a project in the Port of Corpus Christi. Five crewmembers were killed, several more were injured, some seriously, and the vessel was declared a total loss. This incident also resulted in the discharge of approximately 18,000 gallons of oil, diesel fuel and contaminated water into the Corpus Christi Ship Channel, all of which was promptly cleaned up. The Company is fully cooperating with the U.S. Coast Guard, the Port of Corpus Christi Authority, and the National Transportation Safety Board, among others, while they investigate the cause of this incident. The National Transportation Safety Board has named the Company as a party of interest in their 29 ​ Table of Contents investigation. Thus far, eight separate lawsuits have been filed against the Company by certain crewmembers or their heirs under the general maritime law and the Jones Act. In response thereto, the Company has filed an action in the U.S. District Court for the Southern District of Texas seeking consolidation of the lawsuits for procedural purposes since they all arise out of the same occurrence and seeking exoneration from or limitation of liability relating to the foregoing incident as provided for in the federal rules of procedure for maritime claims. The Limitation Court set a deadline of February 17, 2021 by which all claims must be filed and as of the Court’s deadline,  thirteen persons, estates and/or entities filed claims in the Limitation for personal injuries, death, property damages and business interruption, loss of profit, loss of use of natural resources and other economic damages for unspecified economic and compensatory damages. Some of these claimants may not have standing to bring their claims and will be challenged. Further, the Company filed a Default Motion with the Court which was granted on April 8, 2021 and as such bars the filing of any further claims. Applicable accounting guidance under ASC 450 would require the Company to recognize a loss if the loss is determined to be probable and reasonably estimable. As at March 31, 2021, the Company has recognized $ 72.2 million in total obligations to date, which includes approximately $ 18.0 million paid to date to claimants (including nine of 18 crewmembers) and accruals totaling approximately $ 54.2 million. However, this is a multi-party, complex tort proceeding, and it is too early in the proceedings for the Company to establish loss accruals in regard to the balance of the claims. In any event, insurance coverage is available and the carriers of such insurance have taken over the costs of the defense of the claims and have reimbursed the Company $ 17.1 million to date. In addition, the Company continues to believe that it has adequate insurance coverage for all pollution, marine, economic and other potential liabilities arising from the incident. The Company is also confident that it otherwise has adequate vessels, equipment and personnel to fulfill all ongoing, booked and reasonably foreseeable work. In addition, the Company is involved in various other legal and other proceedings which are incidental to the conduct of its business, none of which in the opinion of management will have a material effect on the Company’s financial condition, results of operations or cash flows. Management believes that it has recorded adequate accrued liabilities and believes that it has adequate insurance coverage or has meritorious defenses for these other claims and contingencies. A legal matter was settled in the Company’s favor for $ 5.5 million during the first quarter of 2018. Settlement amounts were recorded in Other gain from continuing operations in the Condensed Consolidated Statement of Operations, Prepaid expenses and other (current portion of the notes receivable) and Other non-current assets (non-current portion of the notes receivable) in the Condensed Consolidated Balance Sheets. As of March 31, 2021, the current portion of the notes receivable was $ 0.8 million and the non-current portion was $ 1.6 million, net of $ 0.2 million of unamortized discount. Legal fees related to this matter were expensed as incurred during the respective reporting period. 17. Segment Information The Company currently operates in two reportable segments: marine and concrete. The Company’s financial reporting systems present various data for management to run the business, including profit and loss statements 30 ​ Table of Contents prepared according to the segments presented. Management uses operating income to evaluate performance between the two segments. Segment information for the periods presented is provided as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ ​ ​ March 31, ​ ​ ​ ​ 2021 ​ 2020 Marine ​ ​ ​ ​ ​ ​ Contract revenues ​ $ 72,146 ​ $ 85,949 Operating income ​ ( 9 ) ​ 2,855 Depreciation and amortization expense ​ ( 4,358 ) ​ ( 4,776 ) ​ ​ ​ ​ ​ ​ ​ Total assets ​ $ 268,345 ​ $ 255,311 Property and equipment, net ​ 106,071 ​ 112,384 ​ ​ ​ ​ ​ ​ ​ Concrete ​ ​ Contract revenues ​ $ 81,163 ​ $ 80,671 Operating income ​ 2,064 ​ 1,510 Depreciation and amortization expense ​ ( 2,127 ) ​ ( 2,116 ) ​ ​ ​ ​ ​ ​ ​ Total assets ​ $ 126,510 ​ $ 129,509 Property and equipment, net ​ 14,808 ​ 16,731 ​ There were less than $ 0.1 million and $ 2.3 million in intersegment revenues between the Company’s two reportable segments for the three months ended March 31, 2021 and 2020, respectively. The marine segment had foreign revenues of $ 2.4 million and $ 4.0 million for the three months ended March 31, 2021 and 2020, respectively. These revenues are derived from projects in the Caribbean Basin and Mexico and are paid primarily in U.S. dollars. There was no foreign revenue for the concrete segment. ​ 31 ​ Table of Contents 18. Leases The Company has operating and finance leases for office space, equipment and vehicles. Leases recorded on the balance sheet consists of the following: ​ ​ ​ ​ ​ ​ ​ ​ March 31, December 31, Leases ​ 2021 2020 Assets ​ ​ ​ ​ ​ Operating lease right-of-use assets, net (1) ​ $ 17,480 $ 18,874 Financing lease right-of-use assets, net (2) ​ 12,097 12,858 Total assets ​ $ 29,577 $ 31,732 Liabilities ​ Current ​ Operating ​ $ 4,777 $ 4,989 Financing ​ 2,878 3,901 Total current ​ 7,655 8,890 Noncurrent ​ Operating ​ 13,512 14,537 Financing ​ 8,680 8,376 Total noncurrent ​ 22,192 22,913 Total liabilities ​ $ 29,847 $ 31,803 (1) Operating lease right-of-use assets are recorded net of accumulated amortization of $ 10.0 million and $ 9.0 million as of March 31, 2021 and December 31, 2020, respectively. (2) Financing lease right-of-use assets are recorded net of accumulated amortization of $ 5.1 million and $ 6.4 million as of March 31, 2021 and December 31, 2020, respectively. Other information related to lease term and discount rate is as follows: ​ ​ ​ ​ ​ ​ ​ March 31, December 31, ​ 2021 2020 Weighted Average Remaining Lease Term (in years) ​ ​ Operating leases 5.22 ​ 5.25 ​ Financing leases 5.17 ​ 4.96 ​ Weighted Average Discount Rate ​ ​ ​ Operating leases (1) 4.74 % 4.73 % Financing leases 4.39 % 4.46 % (1) Upon adoption of the new lease standard, discount rates used for existing operating leases were established on January 1, 2019. 32 ​ Table of Contents The components of lease expense are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ 2021 2020 Operating lease costs: ​ ​ Operating lease cost ​ $ 1,654 ​ $ 1,614 Short-term lease cost (1) ​ 690 ​ 1,161 Financing lease costs: ​ ​ Interest on lease liabilities ​ 126 ​ 106 Amortization of right-of-use assets ​ 781 ​ 700 Total lease cost ​ $ 3,251 ​ $ 3,581 (1) Includes expenses related to leases with a lease term of more than one month but less than one year. Supplemental cash flow information related to leases is as follows: ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ 2021 ​ 2020 Cash paid for amounts included in the measurement of lease liabilities: ​ ​ ​ ​ ​ Operating cash flows for operating leases $ 1,498 ​ $ 1,585 Operating cash flows for finance leases $ 126 ​ $ 106 Financing cash flows for finance leases $ 732 ​ $ 942 Non-cash activity: ​ ROU assets obtained in exchange for new operating lease liabilities $ 165 ​ $ 2,076 ROU assets obtained in exchange for new financing lease liabilities $ 752 ​ $ 8,412 ​ Maturities of lease liabilities are summarized as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases Finance Leases Year ending December 31, ​ ​ ​ ​ ​ ​ 2021 (excluding the three months ended March 31, 2021) ​ $ 4,184 ​ $ 3,553 2022 ​ 4,313 ​ 1,530 2023 ​ 3,239 ​ 2,123 2024 ​ 2,530 ​ 1,563 2025 ​ 2,354 ​ 1,174 Thereafter ​ 4,146 ​ 3,161 Total future minimum lease payments ​ 20,766 ​ 13,104 Less - amount representing interest ​ 2,477 ​ 1,546 Present value of future minimum lease payments ​ 18,289 ​ 11,558 Less - current lease obligations ​ 4,777 ​ 2,878 Long-term lease obligations ​ $ 13,512 ​ $ 8,680 ​ ​ ​ ​ ​ ​ ​ 33 ​ Table of Contents