Shareholders' Equity

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Rollforward Of Accumulated Other Comprehensive Income [Table Text Block]

	Currency Translation Adjustment, Net of Tax		Net Unrealized Gain (Loss) on Cash Flow Hedging Arrangements, Net of Tax		Pension and Post-Retirement Benefit Related Items, Net of Tax		Total
Balance at December 31, 2017	$	(31,340)	$	(1,081)	$	(232,985)	$	(265,406)
Other comprehensive income (loss), net of tax:
Net unrealized actuarial gains (loss), prior service costs, and plan amendments	—		—		(24,106)		(24,106)
Net unrealized gains (loss) on cash flow hedging arrangements	—		(658)		—		(658)
Foreign currency translation adjustment	(32,573)		—		3,522		(29,051)
Amounts recognized from accumulated other comprehensive income (loss), net of tax	—		2,441		14,366		16,807
Net change in other comprehensive income (loss), net of tax	(32,573)		1,783		(6,218)		(37,008)
Balance at December 31, 2018	$	(63,913)	$	702	$	(239,203)	$	(302,414)
Other comprehensive income (loss), net of tax:
Net unrealized actuarial gains (loss), prior service costs, and plan amendments	—		—		(32,269)		(32,269)
Net unrealized gains (loss) on cash flow hedging arrangements	—		(1,063)		—		(1,063)
Foreign currency translation adjustment	2,898		—		(2,108)		790
Amounts recognized from accumulated other comprehensive income (loss), net of tax	—		(861)		12,144		11,283
Net change in other comprehensive income (loss), net of tax	2,898		(1,924)		(22,233)		(21,259)
Balance at December 31, 2019	$	(61,015)	$	(1,222)	$	(261,436)	$	(323,673)
Other comprehensive income (loss), net of tax:
Net unrealized actuarial gains (loss), prior service costs, and plan amendments	—		—		(35,755)		(35,755)
Net unrealized gains (loss) on cash flow hedging arrangements	—		(11,323)		—		(11,323)
Foreign currency translation adjustment	29,914		—		(19,701)		10,213
Amounts recognized from accumulated other comprehensive income (loss), net of tax	—		11,066		14,547		25,613
Net change in other comprehensive income (loss), net of tax	29,914		(257)		(40,909)		(11,252)
Balance at December 31, 2020	$	(31,101)	$	(1,479)	$	(302,345)	$	(334,925)

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

	2020		2019		2018		Location of Amounts Recognized in Earnings
Effective portion of losses (gains) on cash flow hedging arrangements:
Interest rate swap agreements	$	2,413	$	109	$	539	Interest expense
Cross currency swap	11,531		(1,022)		2,212		(a)
Total before taxes	13,944		(913)		2,751
Provision for taxes	2,878		(52)		310		Provision for taxes
Total, net of taxes	$	11,066	$	(861)	$	2,441
Recognition of defined benefit pension and post-retirement items:
Recognition of actuarial losses, plan amendments, prior service cost, and settlement charge before taxes	$	18,609	$	15,467	$	18,756	(b)
Provision for taxes	4,062		3,323		4,390		Provision for taxes
Total, net of taxes	$	14,547	$	12,144	$	14,366