Comprehensive Income (Loss) (Schedule of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Balance on December 31, 2012	$ (141,040)
Other comprehensive income (loss)	(1,958)
Currency impact	(352)
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	2,600	[1]
Amortization of prior service cost (1)	369	[1]
Amortization of transition obligation (1)	21	[1]
Cost of sales	246
Current-period other comprehensive income (loss)	926
Tax effect	(135)
Balance on March 31, 2013	(140,249)
Foreign Currency Translation [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Balance on December 31, 2012	(1,641)
Other comprehensive income (loss)	(2,925)
Amounts reclassified from accumulated other comprehensive income (loss):
Current-period other comprehensive income (loss)	(2,925)
Tax effect	0
Balance on March 31, 2013	(4,566)
Derivative Instruments [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Balance on December 31, 2012	489
Other comprehensive income (loss)	967
Amounts reclassified from accumulated other comprehensive income (loss):
Cost of sales	246
Current-period other comprehensive income (loss)	1,213
Tax effect	(168)
Balance on March 31, 2013	1,534
Pension and Other Postretirement Benefits [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Balance on December 31, 2012	(139,888)
Other comprehensive income (loss)	0
Currency impact	(352)
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	2,600	[1]
Amortization of prior service cost (1)	369	[1]
Amortization of transition obligation (1)	21	[1]
Current-period other comprehensive income (loss)	2,638
Tax effect	33
Balance on March 31, 2013	$ (137,217)

[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.