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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 1,636 $ 1,596
Property and equipment, accumulated depreciation 64,260 57,992
Intangible assets, accumulated amortization $ 9,944 $ 8,917
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Preferred stock, shares issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 30,000,000 30,000,000
Common stock, shares issued (in shares) 20,342,695 18,910,001
Common stock, shares outstanding (in shares) 19,862,534 18,429,840
Treasury stock, shares outstanding (in shares) 1,432,694 1,432,694