Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of derivative instruments measured at fair value on a recurring basis, categorized by the level of inputs used in the valuation

Derivative instruments measured at fair value on a recurring basis, categorized by the level of inputs used in the valuation, include:



	Derivative Instruments at Fair Value as of December 31, 2019
(Dollars in thousands)	Level 1		Level 2			Level 3		Total⁽¹⁾
Foreign currency contracts	$	—	$	(6	)	$	—	$	(6	)
Copper derivative contracts	$	—	$	1,147		$	—	$	1,147
Interest rate swap contract	$	—	$	(1,254	)	$	—	$	(1,254	)



	Derivative Instruments at Fair Value as of December 31, 2018
(Dollars in thousands)	Level 1		Level 2		Level 3		Total⁽¹⁾
Foreign currency contracts	$	—	$	522	$	—	$	522
Copper derivative contracts	$	—	$	583	$	—	$	583
Interest rate swap contract	$	—	$	461	$	—	$	461

⁽¹⁾ All balances were recorded in the “Other current assets” or “Other accrued liabilities” line items in the consolidated statements of financial position, except the 2019 and 2018 interest rate swap balance, which was recorded in the “Other long-term liabilities” and “Other long-term assets” line items, respectively, in the consolidated statements of financial position.