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Consolidated Statements Of Operations And Comprehensive Income (Loss) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Consolidated Statements of Operations And Comprehensive Income/(Loss) [Abstract]        
Foreign currency translation adjustments, tax $ 0 $ 0 $ 0 $ 0
Other comprehensive income (loss), tax $ 0 $ 0 $ 0 $ 0