Comprehensive Income (Loss) (Schedule of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013		Jun. 30, 2013
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	$ (140,249)		$ (141,040)
Other comprehensive income (loss)	5,017		3,059
Currency impact	307		(45)
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	2,600	[1]	5,200	[1]
Amortization of prior service cost (1)	369	[1]	738	[1]
Amortization of transition obligation (1)	21	[1]	42	[1]
Cost of sales	(252)		(6)
Current-period other comprehensive income (loss)	8,062		8,988
Tax effect	176		41
Balance on June 30, 2013	(132,011)		(132,011)
Foreign Currency Translation [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	(4,566)		(1,641)
Other comprehensive income (loss)	2,335		(590)
Amounts reclassified from accumulated other comprehensive income (loss):
Current-period other comprehensive income (loss)	2,335		(590)
Tax effect	0		0
Balance on June 30, 2013	(2,231)		(2,231)
Derivative Instruments [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	1,534		489
Other comprehensive income (loss)	(377)		590
Amounts reclassified from accumulated other comprehensive income (loss):
Cost of sales	(252)		(6)
Current-period other comprehensive income (loss)	(629)		584
Tax effect	120		(48)
Balance on June 30, 2013	1,025		1,025
Pension and Other Postretirement Benefits [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	(137,217)		(139,888)
Other comprehensive income (loss)	3,059		3,059
Currency impact	307		(45)
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	2,600	[1]	5,200	[1]
Amortization of prior service cost (1)	369	[1]	738	[1]
Amortization of transition obligation (1)	21	[1]	42	[1]
Current-period other comprehensive income (loss)	6,356		8,994
Tax effect	56		89
Balance on June 30, 2013	$ (130,805)		$ (130,805)

[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.