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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Statement of Comprehensive Income [Abstract]      
Net income (loss) $ (2,415) $ 2,901 $ 1,915
Other comprehensive income (loss):      
Foreign currency translation adjustments (92) 39 201
Total other comprehensive income (loss) (92) 39 201
Comprehensive income (loss) $ (2,507) $ 2,940 $ 2,116