Note 9 - Bank Credit Facility (Details Textual) $ in Thousands		12 Months Ended
	May 15, 2024	Nov. 30, 2024 USD ($)	Nov. 25, 2023 USD ($)
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	us-gaap:SecuredOvernightFinancingRateSofrMember
Bank One [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 25,000
Letters of Credit Outstanding, Amount			$ 6,013
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