Condensed Consolidated Statements of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Value, Issued	$ 234
Additional Paid in Capital, Common Stock	277,518
Retained Earnings (Accumulated Deficit)	236,459
Accumulated Other Comprehensive Income (Loss), Net of Tax	(83,052)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	431,159
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2016-01 [Member]	1,395
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	252
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ 33
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	41,370
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	102,344
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 18,579
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	1,395
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(758)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	(99)
Stock based compensation	$ 1,556
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	106,792
Common Stock, Par or Stated Value Per Share	$ 0.01
Common Stock, Value, Issued	$ 238
Additional Paid in Capital, Common Stock	287,256
Retained Earnings (Accumulated Deficit)	290,441
Accumulated Other Comprehensive Income (Loss), Net of Tax	(114,350)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	463,585
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	4
Other Comprehensive Income (Loss), Defined Benefit Plan, Transition Asset (Obligation), Reclassification Adjustment from AOCI, before Tax	$ (537)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	68,369
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	11,236
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (2,969)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	2,802
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(13)
Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax	1,869
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	1,869
Stock Issued During Period, Value, Stock Options Exercised	183	$ 183
Stock based compensation	2,071
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	2,071
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ (926)	$ (927)	$ 1
Common Stock, Par or Stated Value Per Share	$ 0.01
Common Stock, Value, Issued	$ 239
Additional Paid in Capital, Common Stock	288,583
Retained Earnings (Accumulated Deficit)	287,472
Accumulated Other Comprehensive Income (Loss), Net of Tax	(109,692)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 466,602