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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
CONDENSED CONSOLIDATED BALANCE SHEETS    
Accounts receivable, allowance for doubtful accounts $ 2,292 $ 1,419
Preferred stock, shares authorized 500,000 500,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 75,000,000 75,000,000
Common stock, shares issued 40,613,000 40,593,000
Common stock, shares outstanding 40,021,000 40,001,000
Treasury stock, at cost 592 592