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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Allowances for doubtful accounts $ 7,759 $ 8,628
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares outstanding (in shares) 18,580,364 19,208,067
Treasury stock. at cost (in shares) 1,184,648  
Series A preferred Stock    
Preferred stock, par value (in dollars per share) $ 1.00 $ 1.00
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Series B convertible preferred stock    
Preferred stock, par value (in dollars per share) $ 1.00 $ 1.00
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000