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Income Taxes - Summary of Valuation Allowance Activity (Details) - Valuation Allowance of Deferred Tax Assets - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance as of the beginning of period $ 1,892 $ 0 $ 0
Additions charged to expense 7,983 3,915 0
Deletions credited to expense 0 (1,850) 0
Currency translation (335) (173) 0
Balance as of the end of period $ 9,540 $ 1,892 $ 0