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Derivatives | 12 Months Ended
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Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Derivatives | 9.DERIVATIVES General. Our earnings and cash flows are subject to fluctuations due to changes in interest rates and foreign currency exchange rates, and we seek to mitigate a portion of these risks by entering into derivative contracts. The derivatives we use are interest rate swaps and foreign currency forward contracts. We recognize derivatives as either assets or liabilities at fair value in the accompanying consolidated balance sheets, regardless of whether or not hedge accounting is applied. We report cash flows arising from our hedging instruments consistent with the classification of cash flows from the underlying hedged items. Accordingly, cash flows associated with our derivative programs are classified as operating activities in the accompanying consolidated statements of cash flows. We formally document, designate and assess the effectiveness of transactions that receive hedge accounting initially and on an ongoing basis. For qualifying hedges, the change in fair value is deferred in accumulated other comprehensive income (loss) (“AOCI”), a component of stockholders’ equity in the accompanying consolidated balance sheets, and recognized in earnings at the same time the hedged item affects earnings. Changes in the fair value of derivatives not designated as hedging instruments are recorded in earnings throughout the term of the derivative. Interest Rate Risk. Our debt under the Fourth Amended Credit Agreement bears interest at variable interest rates and, therefore, we are subject to variability in the cash paid for interest expense. In order to mitigate a portion of this risk, we use a hedging strategy to reduce the variability of cash flows in the interest payments associated with a portion of the variable-rate debt outstanding under our Fourth Amended Credit Agreement that is solely due to changes in the benchmark interest rate. Derivatives Designated as Cash Flow Hedges On August 5, 2016, we entered into a pay-fixed, receive-variable interest rate swap with a current notional amount of $175 million with Wells Fargo Bank to fix the one-month LIBOR rate at 1.12%. The variable portion of the interest rate swap was tied to the one-month LIBOR rate (the benchmark interest rate). The interest rate swap expired on July 6, 2021. On December 23, 2019, we entered into a pay-fixed, receive-variable interest rate swap with a notional amount of $75 million with Wells Fargo. In June 2023, certain terms under the agreement were amended to reflect the transition from LIBOR to SOFR, an alternative reference rate. Under the interest rate swap agreement we fixed the one-month SOFR rate on that portion of our borrowings under the Fourth Amended Credit Agreement at 1.64% for the period from June 1, 2023 to July 31, 2024. The variable portion of the interest rate swap is tied to the one-month SOFR rate (the benchmark interest rate). On a monthly basis, the interest rates under both the interest rate swap and the underlying debt reset, the swap is settled with the counterparty, and interest is paid. At December 31, 2023 and 2022, our interest rate swaps qualified as cash flow hedges. The fair value of our interest rate swap at December 31, 2023 was an asset of $1.5 million, partially offset by $0.4 million in deferred taxes. The fair value of our interest rate swaps at December 31, 2022 was an asset of $3.4 million, partially offset by $0.8 million in deferred taxes. Foreign Currency Risk. We operate on a global basis and are exposed to the risk that our financial condition, results of operations, and cash flows could be adversely affected by changes in foreign currency exchange rates. To reduce the potential effects of foreign currency exchange rate movements on net earnings, we enter into derivative financial instruments in the form of foreign currency exchange forward contracts with major financial institutions. Our policy is to enter into foreign currency derivative contracts with maturities of up to two years. We are exposed to foreign currency exchange rate risk with respect to transactions and balances denominated in various currencies, with our most significant exposure related to transactions and balances denominated in Chinese Renminbi and Euros, among others. We do not use derivative financial instruments for trading or speculative purposes. We do not believe we are subject to any credit risk contingent features related to our derivative contracts, and we seek to manage counterparty risk by allocating derivative contracts among several major financial institutions. Derivatives Designated as Cash Flow Hedges For derivative instruments that are designated and qualify as cash flow hedges, the gain or loss on the derivative instrument is temporarily reported as a component of other comprehensive income and then reclassified into earnings in the same line item associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings. We entered into forward contracts on various foreign currencies to manage the risk associated with forecasted exchange rates which impact revenues, cost of sales, and operating expenses in various international markets. The objective of the hedges is to reduce the variability of cash flows associated with the forecasted purchase or sale of foreign currencies. As of December 31, 2023 and 2022, we had entered into foreign currency forward contracts, which qualified as cash flow hedges, with aggregate notional amounts of $141.1 million and $87.8 million, respectively. Derivatives Not Designated as Cash Flow Hedges We forecast our net exposure in various receivables and payables to fluctuations in the value of various currencies, and we enter into foreign currency forward contracts to mitigate that exposure. As of December 31, 2023 and 2022, we had entered into foreign currency forward contracts related to those balance sheet accounts with aggregate notional amounts of $108.4 million and $92.4 million, respectively. Balance Sheet Presentation of Derivatives. As of December 31, 2023 and 2022, all derivatives, both those designated as hedging instruments and those that were not designated as hedging instruments, were recorded gross at fair value on our consolidated balance sheets. We are not subject to any master netting agreements. The fair value of derivative instruments on a gross basis is as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair Value of Derivative Instruments Designated as Hedging Instruments |  | Balance Sheet Location |  | December 31, 2023 |  | December 31, 2022
Assets |  |  |  | ​ |  |  | ​ |
Interest rate swap |  | Prepaid expenses and other assets | ​ | $ | 1,503 | ​ | $ | —
Interest rate swap |  | Other assets (long-term) | ​ | ​ | — | ​ | ​ | 3,444
Foreign currency forward contracts |  | Prepaid expenses and other assets | ​ | ​ | 2,061 | ​ | ​ | 3,215
Foreign currency forward contracts |  | Other assets (long-term) | ​ | ​ | 216 | ​ |  | 56
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Liabilities) |  |  | ​ |  |  | ​ |  |
Foreign currency forward contracts |  | Accrued expenses | ​ |  | (1,898) | ​ |  | (1,509)
Foreign currency forward contracts |  | Other long-term obligations | ​ |  | (499) | ​ |  | (531)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair Value of Derivative Instruments Not Designated as Hedging Instruments |  | Balance Sheet Location |  | December 31, 2023 |  | December 31, 2022
Assets |  |  | ​ |  |  | ​ |  |
Foreign currency forward contracts |  | Prepaid expenses and other assets | ​ | $ | 828 | ​ | $ | 1,512
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Liabilities) |  |  | ​ |  |  | ​ |  |
Foreign currency forward contracts |  | Accrued expenses | ​ |  | (1,463) | ​ |  | (1,946)
​ Income Statement Presentation of Derivatives Derivatives Designated as Cash Flow Hedges Derivative instruments designated as cash flow hedges had the following effects, before income taxes, on other comprehensive income ("OCI") in our consolidated statements of comprehensive income and consolidated balance sheets (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amount of Gain/(Loss)
​ | ​ | Recognized in OCI
​ | ​ | Year Ended December 31,
Derivative instrument |  | 2023 |  | 2022 |  | 2021
Interest rate swaps | ​ | $ | 609 | ​ | $ | 4,879 | ​ | $ | 1,402
Foreign currency forward contracts | ​ |  | 3,909 | ​ |  | 6,263 | ​ |  | (1,521)
​ Derivative instruments designated as cash flow hedges had the following effects, before income taxes, on AOCI and net earnings in our consolidated statements of income, consolidated statements of comprehensive income and consolidated balance sheets (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Consolidated Statements | ​ | ​ | Amount of Gain/(Loss)
​ | ​ | of Income | ​ | ​ | reclassified from AOCI
​ | ​ | Year Ended December 31, | ​ |  | Year ended December 31,
Location in statements of income |  | 2023 |  | ​ | 2022 | ​ | 2021 |  |  | 2023 |  | 2022 |  | 2021
Interest expense | ​ | $ | (15,511) | ​ | $ | (6,339) | ​ | $ | (5,261) | ​ | ​ | $ | 2,550 |  | $ | (12) |  | $ | (1,509)
Revenue | ​ |  | 1,257,366 | ​ |  | 1,150,981 | ​ |  | 1,074,751 | ​ | ​ |  | 4,081 |  | ​ | 3,583 |  | ​ | (5,592)
Cost of sales | ​ |  | (673,494) | ​ |  | (631,882) | ​ |  | (589,418) | ​ | ​ |  | 1,457 |  | ​ | (1,436) |  | ​ | 1,017
​ As of December 31, 2023, $0.9 million or $0.7 million after taxes, was expected to be reclassified from AOCI to earnings in revenue and cost of sales over the succeeding twelve months. As of December 31, 2023, $1.5 million, or $1.1 million after taxes, was expected to be reclassified from AOCI to earnings in interest expense over the succeeding twelve months. Derivatives Not Designated as Hedging Instruments The following gains/(losses) from these derivative instruments were recognized in our consolidated statements of income for the years presented (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Year ended December 31,
Derivative Instrument |  | Location in statements of income |  | 2023 |  | 2022 |  | 2021
Foreign currency forward contracts |  | Other income (expense) — net | ​ | $ | 2,004 | ​ | $ | 1,420 | ​ | $ | (1,598)
​ See Note 15 for additional information about our derivatives.

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-5C Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//815/tableOfContent + Details
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