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Note 5 - Employee Benefit Plans - The Components of Net Periodic Post-retirement Benefit Cost and Other Amounts Recognized in Other Comprehensive Income (Details) (Parentheticals)
12 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Mar. 25, 2023
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Interest Expense, Nonoperating Interest Expense, Nonoperating Interest Expense, Nonoperating