Condensed Consolidated Statements of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Common Stock [Member]	Retained Earnings	AOCI Attributable to Parent	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
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)
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	$ 8,391	$ 0	$ 0	$ 8,391	$ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(8,701)				(8,701)
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	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)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	133,000
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
Common Stock, Value, Issued	286
Additional Paid in Capital, Common Stock	515,797
Retained Earnings (Accumulated Deficit)	356,758
Accumulated Other Comprehensive Income (Loss), Net of Tax	(38,043)				(38,043)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	833,797
Treasury Stock, Value	1,001
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ (5)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	87,496
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	8,485
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 9,275	0	0	9,275	0	$ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	2,901	0	0	0	2,901	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	541	0	0	0	541	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	42	0	0	0	42	0
Stock Issued During Period, Value, Stock Options Exercised	225	225	0	0	0	0
Stock-based compensation	1,981	1,981	0	0	0	0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(1,805)	(1,806)	$ 1	0	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(176)
Common Stock, Value, Issued	287	287
Additional Paid in Capital, Common Stock	516,197	$ 516,197
Retained Earnings (Accumulated Deficit)	366,033			$ 366,033
Accumulated Other Comprehensive Income (Loss), Net of Tax	(34,559)				$ (34,559)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	846,957
Treasury Stock, Value	$ 1,001					$ (1,001)