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Condensed Consolidated Balance Sheets (Parenthetical)
Sep. 30, 2025
Vote
$ / shares
shares
Dec. 31, 2024
Vote
$ / shares
shares
Treasury stock, shares 12,397,330 11,649,110
Class B Common Stock [Member]    
Common Stock, votes per share | Vote 10 10
Common Stock, par value | $ / shares $ 0.01 $ 0.01
Common Stock, shares authorized 14,000,000 14,000,000
Common Stock, shares issued 11,726,718 11,738,718
Common Stock, shares outstanding 11,726,718 11,738,718
Common Stock [Member]    
Common Stock, votes per share | Vote 1 1
Common Stock, par value | $ / shares $ 0.01 $ 0.01
Common Stock, shares authorized 62,000,000 62,000,000
Common Stock, shares issued 45,340,074 45,082,156
Common Stock, shares outstanding 32,942,744 33,433,046