Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax

Amounts included in accumulated other comprehensive loss, net of tax, were as follows: 

	Unrecognized Net Defined Benefit Plan Costs		Change in Fair Value of Derivatives		Foreign Currency Translation		Total
	(Dollars in thousands)
Balance at December 31, 2020	$	(168,604)	$	(4,656)	$	(87,693)	$	(260,953)
Other comprehensive loss before reclassifications	—		1,022		(38,655)		(37,633)
Amounts reclassified from accumulated other     comprehensive loss	5,910		1,518		—		7,428
Other comprehensive loss	5,910		2,540		(38,655)		(30,205)
Balance at September 30, 2021	$	(162,694)	$	(2,116)	$	(126,348)	$	(291,158)