Item 3. Quantitative and Qualitative Disclosures About Market Risk
Item 3. Quantitative and Qualitative Disclosures About Market Risk.
Quantitative and Qualitative Disclosure About Market Risk
Foreign Currency Risk
We are exposed to foreign currency exchange risk related to transactions in currencies other than the U.S. Dollar, which is our functional currency. Our foreign subsidiaries, sales, certain inventory purchases and operating expenses expose us to foreign currency exchange risk. For the three and six months ended June 30, 2021 approximately 11% of our revenue was in foreign currencies. For the three and six months ended June 30, 2020 approximately 8% of our revenue was in foreign currencies These sales were primarily denominated in Canadian dollars and British pounds.
We use derivative instruments to manage the effects of fluctuations in foreign currency exchange rates on our net cash flows. We primarily enter into option and forward contracts to hedge forecasted payments, typically for up to 12 months, for cost of revenue, selling and marketing expenses, general and administrative expenses and intercompany transactions not denominated in the local currencies of our foreign operations. We designate some of these instruments as cash flow hedges and records them at fair value as either assets or liabilities within the consolidated balance sheets. Some of these instruments are freestanding derivatives for which hedge accounting does not apply.
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Changes in the fair value of cash flow hedges are recorded in accumulated other comprehensive income (loss) until the hedged forecasted transaction affects earnings. Deferred gains and losses associated with cash flow hedges of third-party payments are recognized in cost of revenue, selling and marketing or general and administrative expenses, as applicable, during the period when the hedged underlying transaction affects earnings. Changes in the fair value of certain derivatives for which hedge accounting does not apply are immediately recognized directly in earnings to cost of revenue.
A hypothetical 10% change in exchange rates, with the U.S. dollar as the functional and reporting currency, would not result in a material increase or decrease in cost of revenue and operating expenses.
The aggregate notional amount of foreign exchange derivative instruments at June 30, 2021 and December 31, 2020 was $24.5 million, $34.0 million, respectively.
Interest Rate Risk
We are primarily exposed to changes in short-term interest rates with respect to our cost of borrowing under our Credit Facility. We monitor our cost of borrowing under our facility, taking into account our funding requirements, and our expectations for short-term rates in the future. As of June 30, 2021, there were outstanding borrowings under the Credit Facility, and a letter of credit was issued for $3.0 million. A hypothetical 10% change in the interest rate on our Credit Facility for all periods presented would not have a material impact on our financial statements.
Inflation Risk
We do not believe that inflation has had a material effect on our business, financial condition or results of operations. If our costs become subject to significant inflationary pressures, we may not be able to fully offset such higher costs through price increases. Our inability or failure to do so could harm our business, financial condition, and operating results.
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