Stockholders' Equity and Earnings Per Share (Reclassification out of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ (711,710)		$ (711,375)		$ (647,422)
Interest expense	(7,566)		(4,775)		(6,088)
Income (loss) from continuing operations before income tax (benefit) provision	(76,573)		55,720		58,028
Income tax expense (benefit)	38,455		(11,270)		(15,865)
Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	1,525		1,253
Loss (gain) on cash flow hedging | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income tax (benefit) provision	1,387		247
Income tax expense (benefit)	(489)		(95)
Net of tax	898		152
Loss (gain) on cash flow hedging | Reclassification out of accumulated other comprehensive income | Foreign exchange contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	(108)		(213)
Loss (gain) on cash flow hedging | Reclassification out of accumulated other comprehensive income | Interest rate contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	1,495		460
Pension and postretirement plan | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income tax (benefit) provision	940		1,841
Income tax expense (benefit)	(313)		(740)
Net of tax	627		1,101
Actuarial loss	1,015	[1]	1,995	[1]
Prior-service credit	$ (75)	[1]	$ (154)	[1]

[1] These AOCI components are included in the computation of pension expense. See Note 16 for a discussion of the Company's pension expense.