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	Treasury Stock	Treasury Stock Director
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	52,276,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	18,907,000
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)
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	(105)
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)
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
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
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	537				$ 537		$ 0		$ 0		$ 0
Stock Issued During Period, Value, Stock Options Exercised	206			206		0		0		0
Stock-based compensation			$ 2,341	2,341		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)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	784,384
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				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)
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	22
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	25,088							25,088
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax										(6,782)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax										276
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent										(166)
Stock-based compensation	5,264
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(90)
Common Stock, Value, Issued				287
Additional Paid in Capital, Common Stock				516,197
Retained Earnings (Accumulated Deficit)								366,033
Accumulated Other Comprehensive Income (Loss), Net of Tax										(34,559)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	846,957
Treasury Stock, Value												(1,001)
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ 27
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	19,653,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	9,556,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 15,813			0		0		15,813		0		0
Stock Issued During Period, Value, Stock Dividend	(2,012)			0		0		(2,012)		0		0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(9,683)			0		0		0		(9,683)		0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(265)			0		0		0		(265)		0
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	(208)			0		0		0		(208)		0
Stock Issued During Period, Value, Stock Options Exercised	265			265		0		0		0		0
Stock-based compensation		$ 587	$ 2,696	2,696	$ 587	0	$ 0	0	$ 0	0	$ 0	0	$ 0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	(152)			$ (152)		$ 0		$ 0		0		0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	86
Common Stock, Value, Issued	287
Additional Paid in Capital, Common Stock	519,593
Retained Earnings (Accumulated Deficit)	379,834
Accumulated Other Comprehensive Income (Loss), Net of Tax	(44,715)									$ (44,715)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	853,998
Treasury Stock, Value	$ 1,001											$ (1,001)