Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2022
Dec. 31, 2021
Convertible preferred stock issued 0  
Class A common stock    
Common stock, par value (in dollars per share) $ 0.01  
Common stock, shares authorized 100,000,000  
Common stock, shares issued 67,574,922 66,501,072
Common stock, shares outstanding 24,204,324 28,692,532
Treasury stock, shares 43,370,598 37,808,540
Class B common stock    
Common stock, par value (in dollars per share) $ 0.01  
Common stock, shares authorized 30,000,000  
Common stock, shares issued 12,029,375