CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Comprehensive (Loss)/Gain [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at Dec. 31, 2008	$ 74,786	$ 3,140	$ 99,881	$ 11,960	$ (19,014)		$ (21,181)
Balance (in shares) at Dec. 31, 2008		31,406,778
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,392			10,392		10,392
Foreign currency translation adjustment						9,819
Unrealized gains on hedging contracts, tax						2,450
Pensions, tax						4,309
Other comprehensive income (loss)	16,578					16,578	16,578
Total comprehensive income (loss)						26,970
Adjustment to cash dividend on restricted stock	(7)			(7)
Purchase of treasury stock	(25)				(25)
Exercise of stock options	9		9
Exercise of stock options (in shares)		2,000
Deferred compensation	162		(102)		264
Vested restricted stock	0		(666)		666
Stock option modification	94		94
Stock option expense	554		554
Restricted stock expense	658		658
Performance stock expense	69		69
Balance at Dec. 31, 2009	103,270	3,140	100,497	22,345	(18,109)		(4,603)
Balance (in shares) at Dec. 31, 2009		31,408,778
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,647			9,647		9,647
Foreign currency translation adjustment						(7,417)
Unrealized gains on hedging contracts, tax						1,741
Pensions, tax						(1,613)
Other comprehensive income (loss)	(7,289)					(7,289)	(7,289)
Total comprehensive income (loss)						2,358
Purchase of treasury stock	(33)				(33)
Deferred compensation	166		(96)		262
Vested restricted stock	0		(1,004)		1,004
Vested restricted stock (in shares)		860
Stock option modification	52		52
Stock option expense	1,020		1,020
Restricted stock expense	645		645
Performance stock expense	157		157
Balance at Dec. 31, 2010	107,635	3,140	101,271	31,992	(16,876)		(11,892)
Balance (in shares) at Dec. 31, 2010	31,409,638	31,409,638
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,968			10,968		10,968
Foreign currency translation adjustment						(7,501)
Unrealized gains on hedging contracts, tax						339
Pensions, tax						(12,533)
Other comprehensive income (loss)	(19,695)					(19,695)	(19,695)
Total comprehensive income (loss)						(8,727)
Purchase of treasury stock	(329)				(329)
Exercise of stock options	145	3	142
Exercise of stock options (in shares)		31,500
Deferred compensation	52		(28)		80
Vested restricted stock	0		(911)		911
Vested performance stock	0		(393)		393
Stock option expense	1,028		1,028
Restricted stock expense	497		497
Performance stock expense	40		40
Balance at Dec. 31, 2011	$ 100,341	$ 3,143	$ 101,646	$ 42,960	$ (15,821)		$ (31,587)
Balance (in shares) at Dec. 31, 2011	31,441,138	31,441,138