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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Dec. 31, 2023
Jul. 02, 2023
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, authorized (in shares) 10,000,000 10,000,000
Preferred stock, issued (in shares) 0 0
Common Class A [Member]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 200,000,000 200,000,000
Common stock, issued (in shares) 58,743,969 58,273,747
Treasury stock, shares (in shares) 21,089,336 20,565,875
Common Class B [Member]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 200,000,000 200,000,000
Common stock, issued (in shares) 32,348,221 32,348,221
Treasury stock, shares (in shares) 5,280,000 5,280,000