Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

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, 2016	$	(115,322	)	$	(2,232	)	$	(237,444	)	$	(354,998	)
Other comprehensive income (loss), net of tax:
Net unrealized actuarial gains (loss), prior service costs, and plan amendments	—			—			1,678			1,678
Net unrealized gains (loss) on cash flow hedging arrangements	—			1,424			—			1,424
Foreign currency translation adjustment	83,982			—			(12,092		)	71,890
Amounts recognized from accumulated other comprehensive income (loss), net of tax	—			(273		)	14,873			14,600
Net change in other comprehensive income (loss), net of tax	83,982			1,151			4,459			89,592
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	)

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

	2018		2017			Location of Amounts Recognized in Earnings
Effective portion of losses (gains) on cash flow hedging arrangements:
Interest rate swap agreements	$	539	$	1,679		Interest expense
Cross currency swap	2,212		(1,416		)	(a)
Total before taxes	2,751		263
Provision for taxes	310		536			Provision for taxes
Total, net of taxes	$	2,441	$	(273	)
Recognition of defined benefit pension and post-retirement items:
Recognition of actuarial losses, plan amendments, prior service cost, and settlement charge before taxes	$	18,756	$	20,137		(b)
Provision for taxes	4,390		5,264			Provision for taxes
Total, net of taxes	$	14,366	$	14,873