v3.25.3
Consolidated Condensed Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Sep. 27, 2025
Dec. 31, 2024
Treasury shares (in shares) 1,137,995 1,137,995
Common Stock, Excluding Class B Convertible Common Stock [Member]    
Common stock, par value (in dollars per share) $ 0.1 $ 0.1
Common stock, authorized (in shares) 25,000,000 25,000,000
Common stock, outstanding (in shares) 12,256,197 12,256,197
Class B Convertible Common Stock [Member]    
Common stock, par value (in dollars per share) $ 0.1 $ 0.1
Common stock, authorized (in shares) 3,000,000 3,000,000
Common stock, outstanding (in shares) 1,022,887 1,022,887