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CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($)
shares in Thousands, $ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 2,264 $ 2,210
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 1,500 1,500
Preferred stock, shares outstanding 0 0
Preferred stock, shares issued 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 44,000 44,000
Common stock, shares issued 20,455 20,412
Common stock, shares outstanding 20,071 20,028
Treasury stock, shares 384 384
Contingent purchase consideration $ 2,424 $ 2,424