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Condensed Consolidated Statements Of Operations (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Cost Of Revenue [Member]        
Stock-based compensation expense $ 20 $ 20 $ 73 $ 57
Research And Development [Member]        
Stock-based compensation expense 16   17 4
Sales And Marketing [Member]        
Stock-based compensation expense 31 32 116 93
General And Administrative [Member]        
Stock-based compensation expense $ 343 $ 243 $ 915 $ 738