Note 7 - Bank Credit Facility (Details Textual) - USD ($) $ in Thousands	6 Months Ended
	May 31, 2025	May 15, 2024
Secured Overnight Financing Rate	us-gaap:SecuredOvernightFinancingRateSofrMember
Bank One [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 25,000
Letters of Credit Outstanding, Amount	$ 8,182
Debt Instrument, Basis Spread on Variable Rate	1.75%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Debt Instrument, Covenant, Minimum Tangible Net Worth	$ 120,000
Debt Instrument, Covenant, Letters of Credit Outstanding, Minimum Amount	$ 8,250
Debt Instrument, Covenant, Fixed Charge Coverage Ratio	1.2
Debt Instrument, Covenant, Lease-adjusted Leverage Ratio	3.35
Line of Credit Facility, Remaining Borrowing Capacity	$ 16,818