Condensed Consolidated Statements of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Director	All Other Individuals	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Director	Common Stock [Member]	Common Stock [Member] Director	Retained Earnings	Retained Earnings Director	AOCI Attributable to Parent	AOCI Attributable to Parent Director
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Value, Issued	$ 240
Additional Paid in Capital, Common Stock	296,093
Retained Earnings (Accumulated Deficit)	293,802
Accumulated Other Comprehensive Income (Loss), Net of Tax	(59,986)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	530,149
Proceeds from Other Equity	198,705			$ 198,662		$ 43		$ 0		$ 0
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ 34
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	58,081
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	12,682
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (7,263)			0		0		(7,263)		0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	2,076									2,076
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax				0		0		0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	96			0		0		0		96
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	(97)			0		0		0		(97)
Stock Issued During Period, Value, Stock Options Exercised	290			290		0		0		0
Stock-based compensation	2,262			2,262		0		0		0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(1,765)			(1,766)		(1)		0		0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(31)
Proceeds from Other Equity	198,705
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 7,940							7,940
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax										(2,150)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax										(2,899)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent										115
Stock Issued During Period, Shares, New Issues	4,312,500
Stock-based compensation	$ 5,504
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	$ 955
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	138,000
Common Stock, Value, Issued	$ 284
Additional Paid in Capital, Common Stock	495,541
Retained Earnings (Accumulated Deficit)	286,539
Accumulated Other Comprehensive Income (Loss), Net of Tax	(57,911)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	724,453
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ (74)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	32,665
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	38,744
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 15,203			0		0		15,203		0
Stock Issued During Period, Value, Stock Dividend	(1,706)			0		0		(1,706)		0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(4,226)			0		0		0		(4,226)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(2,995)			0		0		0		(2,995)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	212			0		0		0		212
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	480				$ 480		$ 0		$ 0		$ 0
Stock Issued During Period, Value, Stock Options Exercised	1,122			1,122				0		0
Stock-based compensation			$ 2,762	2,762		0		0		0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(147)			(147)		0		0		0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	986
Common Stock, Value, Issued	284
Additional Paid in Capital, Common Stock	499,758
Retained Earnings (Accumulated Deficit)	300,036
Accumulated Other Comprehensive Income (Loss), Net of Tax	(64,920)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	735,158
Common Stock, Value, Issued	285
Additional Paid in Capital, Common Stock	506,074
Retained Earnings (Accumulated Deficit)	316,343
Accumulated Other Comprehensive Income (Loss), Net of Tax	(49,899)									(49,899)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	772,803
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ (49)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	52,276
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	18,907
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest				0		0		8,391		0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	$ (8,701)			0		0		0		(8,701)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	2,689			0		0		0		2,689
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	146			0		0		0		146
Stock Issued During Period, Value, Stock Options Exercised	415			415		0		0		0
Stock-based compensation	751			751		0		0		0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(1,313)			(1,314)		1		0		0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(812)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	22,505							22,505
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax										(19,482)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax										7,375
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent										312
Stock-based compensation	3,629
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(2,375)
Common Stock, Value, Issued				286
Additional Paid in Capital, Common Stock				505,926
Retained Earnings (Accumulated Deficit)								324,734
Accumulated Other Comprehensive Income (Loss), Net of Tax										(55,765)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	775,181
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ (56)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	31,313
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	9,531
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 14,114			0		0		14,114		0
Stock Issued During Period, Value, Stock Dividend	(2,004)			0		0		(2,004)		0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(10,781)			0		0		0		(10,781)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	4,686			0		0		0		4,686
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	166			0		0		0		166
Stock Issued During Period, Value, Stock Options Exercised	206			206		0		0		0
Stock-based compensation		$ 537	$ 2,341	2,341	$ 537	0	$ 0	0	$ 0	0	$ 0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(62)			$ (62)		$ 0		$ 0		0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(1,509)
Common Stock, Value, Issued	286
Additional Paid in Capital, Common Stock	508,948
Retained Earnings (Accumulated Deficit)	336,844
Accumulated Other Comprehensive Income (Loss), Net of Tax	(61,694)									$ (61,694)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 784,384