Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Parentheticals)

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CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 199 $ 141
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 28,359,397 28,345,525
Common stock, shares outstanding (in shares) 27,089,834 27,075,962
Treasury stock, common shares (in shares) 1,269,563 1,269,563