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Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Thousands, $ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Allowance for doubtful accounts, trade accounts receivable (in dollars) $ 5,383 $ 4,826
Preferred stock, par value (In dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 10,000 10,000
Treasury stock, shares 2,720 2,705
Series 2012-A Preferred Stock    
Designated shares 8,750 8,750
Preferred stock, shares issued 866 983
Preferred stock, shares outstanding 866 983
Class A Common Stock    
Common stock, par value (In dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 35,000 35,000
Common stock, shares issued 1,574 1,574
Common stock, shares outstanding 1,574 1,574
Class B Common Stock    
Common stock, par value (In dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 200,000 200,000
Common stock, shares issued 27,159 27,126
Common stock, shares outstanding 24,439 24,421