Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash Equivalents [Abstract]
Original maturity period of temporary cash investments considered as cash equivalents, maximum	3 months
Summary of estimated useful lives for each asset group [Abstract]
Total interest capitalized	$ 298
Income taxes [Abstract]
Deferred tax liability on undistributed foreign earnings	568	541
Foreign Currency [Abstract]
Foreign currency net transaction losses	133	274	62
Earnings per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	916,350	580,745	1,839,373
Components of accumulated other comprehensive loss in stockholders' equity [Abstract]
Foreign currency translation	9,990	5,177
Unrealized loss on hedging contracts, net of tax	(396)	(600)
Pensions, net of tax	(28,556)	(38,668)
Total	(18,962)	(34,091)
Minimum [Member]
Concentrations of credit risk [Abstract]
Cash balances with European Union banks	5,000
Minimum [Member] | Buildings and improvements [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	20 years
Minimum [Member] | Machinery and equipment [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	7 years
Minimum [Member] | Furniture and fixtures [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	5 years
Minimum [Member] | Computer hardware and software [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	3 years
Maximum [Member]
Concentrations of credit risk [Abstract]
Cash balances with European Union banks	$ 15,000
Maximum [Member] | Buildings and improvements [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	30 years
Maximum [Member] | Machinery and equipment [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	15 years
Maximum [Member] | Furniture and fixtures [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	7 years
Maximum [Member] | Computer hardware and software [Member]
Summary of estimated useful lives for each asset group [Abstract]
Estimated useful lives	7 years