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Note 11 - Stockholders' Equity (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Mar. 31, 2026
Treasury Stock, Value, Acquired, Cost Method $ 1,350 $ 3,774  
Treasury Stock, Preferred and Common Shares (in shares) 5,442,980    
Treasury Stock, Value $ 227,424 $ 214,443 $ 226,074
SECT Shares, Purchased Value $ 44    
Common Class A [Member]      
Treasury Stock, Shares, Acquired 9,900 41,937  
Treasury Stock, Value, Acquired, Cost Method $ 1,400 $ 3,800  
Common Class B [Member]      
SECT, Shares Purchased (in shares) 276    
SECT Shares, Purchased Value $ 100