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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Statement Of Financial Position [Abstract]    
Allowance for doubtful accounts   $ 70
Allowance for credit losses $ 579 $ 70
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 125,000,000 125,000,000
Common stock, shares issued 40,259,917 39,941,327
Common stock, shares outstanding 40,259,917 39,941,327