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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Taxes [Abstract]        
(Benefit) provision for income taxes $ (449) $ 234 $ (190) $ 307
Effective tax rate (84.40%) 22.10% 27.00% 35.40%
U.S. statutory federal income tax rate     21.00%  
Income Tax Examination [Abstract]        
Probability of uncertain tax position to be recognized     50.00%  
Percentage of tax position realized upon ultimate settlement     50.00%  
Sweden [Member]        
Income Tax Examination [Abstract]        
Income tax examination, year under examination     2011  
China [Member]        
Income Tax Examination [Abstract]        
Income tax examination, year under examination     2014  
India [Member]        
Income Tax Examination [Abstract]        
Income tax examination, year under examination     2015  
UK [Member]        
Income Tax Examination [Abstract]        
Income tax examination, year under examination     2015  
Federal [Member]        
Income Tax Examination [Abstract]        
Income tax examination, year under examination     1997  
State [Member]        
Income Tax Examination [Abstract]        
Income tax examination, year under examination     1997