Hedging Transactions and Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

As of March 31, 2021, the notional values of the remaining foreign currency forward contracts were as follows:

Notional Values of Foreign Currency Derivatives
USD/CNH	$	20,477,033
KRW/USD	₩	11,317,100,000
EUR/USD	€	6,788,458

As of March 31, 2021, the volume of our copper contracts outstanding was as follows:

Volume of Copper Derivatives
April 2021 - June 2021	256 metric tons per month
July 2021 - September 2021	222 metric tons per month
October 2021 - December 2021	222 metric tons per month
January 2022 - March 2022	213 metric tons per month

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

The impacts from our derivative instruments on the statement of operations and statements of comprehensive income (loss) were as follows:

		Three Months Ended
(Dollars in thousands)	Financial Statement Line Item	March 31, 2021		March 31, 2020
Foreign Currency Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(822)	$	(528)
Copper Derivative Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	2,547	$	(1,135)
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	—	$	(1,690)