Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 258 $ 416
Common stock, par value (in USD per share) $ 0.01 $ 0.01
Common stock authorized (in shares) 100,000,000 100,000,000
Common stock issued (in shares) 41,337,108 40,618,766
Common stock outstanding (in shares) 41,337,108 40,618,766