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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Statement of Comprehensive Income [Abstract]    
Net income (loss) $ (4,080) $ 1,079
Other comprehensive loss:    
Foreign currency translation adjustments (19) (84)
Total other comprehensive loss (19) (84)
Comprehensive income (loss) $ (4,099) $ 995