Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.7.0.1
Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Income Tax Expense (Benefit), Continuing Operations [Abstract]      
Income tax benefit $ (7,588) $ (4,882)  
Valuation allowance 276,500   $ 290,200
Current income tax receivables 11,943   11,943
Non-current income tax receivables $ 59,789   $ 52,097
Minimum      
Income Tax Expense (Benefit), Continuing Operations [Abstract]      
Tax years under examination 2013    
Maximum      
Income Tax Expense (Benefit), Continuing Operations [Abstract]      
Tax years under examination 2016