Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2018

Accumulated Other Comprehensive Income [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents changes in accumulated other comprehensive income (loss) by component for the periods ended March 31, 2018 and 2017:

	Currency Translation Adjustment			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:
Unrealized gains (losses) cash flow hedging arrangements	—			5,915			—			5,915
Foreign currency translation adjustment	28,969			—			(6,464		)	22,505
Amounts recognized from accumulated other comprehensive income (loss), net of tax	—			(3,215		)	3,685			470
Net change in other comprehensive income (loss), net of tax	28,969			2,700			(2,779		)	28,890
Balance at March 31, 2018	$	(2,371	)	$	1,619		$	(235,764	)	$	(236,516	)

	Currency Translation Adjustment			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:
Unrealized gains (losses) cash flow hedging arrangements	—			152			—			152
Foreign currency translation adjustment	24,349			—			(4,546		)	19,803
Amounts recognized from accumulated other comprehensive income (loss), net of tax	—			211			3,712			3,923
Net change in other comprehensive income (loss), net of tax	24,349			363			(834		)	23,878
Balance at March 31, 2017	$	(90,973	)	$	(1,869	)	$	(238,278	)	$	(331,120	)

Disclosure of Reclassification Amount [Text Block]

The following table presents amounts recognized from accumulated other comprehensive income (loss) for the three months ended March 31:

	2018			2017		Location of Amounts Recognized in Earnings
Effective portion of (gains) losses on cash flow hedging arrangements:
Interest rate swap agreements	$	277		$	344	Interest expense
Cross currency swap	(3,710		)	—		(a)
Total before taxes	(3,433		)	344
Provision for taxes	(218		)	133		Provision for taxes
Total, net of taxes	$	(3,215	)	$	211
Recognition of defined benefit pension and post-retirement items:
Recognition of actuarial (gains) losses, plan amendments and prior service cost, before taxes	$	4,811		$	5,039	(b)
Provision for taxes	1,126			1,327		Provision for taxes
Total, net of taxes	$	3,685		$	3,712

Schedule of Comprehensive Income (Loss) [Table Text Block]

Comprehensive income (loss), net of tax consisted of the following:

	March 31, 2018		March 31, 2017
Net earnings	$	93,304	$	92,466
Other comprehensive income (loss), net of tax	28,890		$	23,878
Comprehensive income (loss), net of tax	$	122,194	$	116,344