Stockholders' Equity and Earnings Per Share (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales		$ (736,364)	$ (711,710)	$ (711,375)
Interest expense		(6,924)	(7,566)	(4,775)
Income (loss) before income tax provision (benefit)		24,799	(76,573)	55,720
Income tax expense (benefit)		(2,815)	38,455	(11,270)
Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax		1,265	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) before income tax provision (benefit)		600	1,387	247
Income tax expense (benefit)		(191)	(489)	(95)
Net of tax		409	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		(860)	(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		1,460	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) before income tax provision (benefit)		1,276	940	1,841
Income tax expense (benefit)		(420)	(313)	(740)
Net of tax		856	627	1,101
Actuarial loss	[1]	1,333	1,015	1,995
Prior-service credit	[1]	$ (57)	$ (75)	$ (154)

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