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Income Taxes (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Income Tax Holiday [Line Items]        
Document Fiscal Year Focus     2017  
Effective tax rate (benefit) provision (31.70%) (25.90%) (25.40%) (24.50%)
Effective income tax rate reconciliation, discrete items $ 2,100 $ (100)   $ 1,000
Income Tax Expense (Benefit) $ 600      
Pre-discrete tax rate (benefit) provision (22.60%) (27.80%) (17.90%) (18.10%)
Domestic Tax Authority [Member]        
Income Tax Holiday [Line Items]        
Effective income tax rate reconciliation, discrete items $ 2,900     $ 900
Foreign Tax Authority        
Income Tax Holiday [Line Items]        
Effective income tax rate reconciliation, tax holiday $ 4,200 $ (2,800) $ 4,100 $ (6,200)
Holiday benefit (usd per share) $ 0.05 $ 0.03   $ 0.07