Accumulated Other Comprehensive Income (Loss) (Schedule of AOCI) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance		$ (120,232)	$ (138,447)
Other comprehensive income (loss)		(485)	(11,319)
Currency impact		103	2,291
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	[1]	1,331	2,488
Amortization of prior service cost (1)	[1]	47	75
Cost of sales		540	607
Interest expense		391
Current-period other comprehensive income (loss)		1,927	(5,858)
Tax effect		409	(162)
Ending balance		(117,896)	(144,467)
Foreign Currency Translation [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance		(22,913)	(9,162)
Other comprehensive income (loss)		3,350	(10,490)
Amounts reclassified from accumulated other comprehensive income (loss):
Current-period other comprehensive income (loss)		3,350	(10,490)
Tax effect		(145)	0
Ending balance		(19,708)	(19,652)
Derivative Instruments [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance		(1,860)	(625)
Other comprehensive income (loss)		(3,835)	(829)
Amounts reclassified from accumulated other comprehensive income (loss):
Cost of sales		540	607
Interest expense		391
Current-period other comprehensive income (loss)		(2,904)	(222)
Tax effect		1,046	(20)
Ending balance		(3,718)	(867)
Pension and Other Postretirement Benefits [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance		(95,459)	(128,660)
Other comprehensive income (loss)		0	0
Currency impact		103	2,291
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	[1]	1,331	2,488
Amortization of prior service cost (1)	[1]	47	75
Current-period other comprehensive income (loss)		1,481	4,854
Tax effect		(492)	(142)
Ending balance		$ (94,470)	$ (123,948)

[1] These accumulated other comprehensive income components are included in the computation of net periodic benefit cost within the cost of sales and selling, general and administrative expenses on the Condensed Consolidated Statements of Operations.