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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2019
Dec. 31, 2018
CONSOLIDATED BALANCE SHEETS    
Common stock par value (in dollar per share) $ 0.001 $ 0.001
Common stock authorized (in shares) 125,000,000 125,000,000
Common stock issued (in shares) 13,291,563 13,124,842
Common stock outstanding (in shares) 13,291,563 13,124,842