Comprehensive Income (Loss) (Schedule of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013		Sep. 30, 2013
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	$ (132,011)		$ (141,040)
Other comprehensive income (loss)	5,210		8,269
Currency impact	(33)		(108)
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	2,532	[1]	7,764	[1]
Amortization of prior service cost (1)	393	[1]	1,171	[1]
Cost of sales	(26)		(32)
Current-period other comprehensive income (loss)	8,076		17,064
Tax effect	2		43
Balance on September 30, 2013	(123,933)		(123,933)
Foreign Currency Translation [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	(2,231)		(1,641)
Other comprehensive income (loss)	4,528		3,938
Amounts reclassified from accumulated other comprehensive income (loss):
Current-period other comprehensive income (loss)	4,528		3,938
Tax effect	0		0
Balance on September 30, 2013	2,297		2,297
Derivative Instruments [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	1,025		489
Other comprehensive income (loss)	(78)		512
Amounts reclassified from accumulated other comprehensive income (loss):
Cost of sales	(26)		(32)
Current-period other comprehensive income (loss)	(104)		480
Tax effect	77		29
Balance on September 30, 2013	998		998
Pension and Other Postretirement Benefits [Member]
Change in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	(130,805)		(139,888)
Other comprehensive income (loss)	760		3,819
Currency impact	(33)		(108)
Amounts reclassified from accumulated other comprehensive income (loss):
Amortization of actuarial loss (1)	2,532	[1]	7,764	[1]
Amortization of prior service cost (1)	393	[1]	1,171	[1]
Current-period other comprehensive income (loss)	3,652		12,646
Tax effect	(75)		14
Balance on September 30, 2013	$ (127,228)		$ (127,228)

[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.