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Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]        
Net income (loss) before dividends on redeemable convertible preferred stock $ (2,624) $ 204 $ (5,356) $ 1,025
Other comprehensive income:        
Foreign currency translation gain (loss), net of deferred income taxes (41) (315) (106) (410)
Total comprehensive income (loss) $ (2,665) $ (111) $ (5,462) $ 615