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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Statement of Comprehensive Income [Abstract]        
Net income (loss) $ 118 $ (576) $ 3,097 $ 2,855
Other comprehensive income (loss):        
Foreign currency translation adjustment 138 131 (380) 231
Total comprehensive income (loss) $ 256 $ (445) $ 2,717 $ 3,086