Note 2 - Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended		12 Months Ended
	May 30, 2020 USD ($)	Nov. 30, 2019 USD ($) shares	Nov. 28, 2020 USD ($)	Nov. 30, 2019 USD ($)	Nov. 24, 2018 USD ($)	Dec. 01, 2019 USD ($)
Contract with Customer, Liability, Total		$ 25,341	$ 39,762	$ 25,341
Contract with Customer, Asset, after Allowance for Credit Loss, Total		$ 441	$ 783	$ 441
Percent Of Aggregate Risk Exposure Net Of Reserves Attributable To Major Customers		28.00%	24.00%	28.00%
Percentage of LIFO Inventory		52.00%	53.00%	52.00%
Goodwill, Impairment Loss	$ 1,971	$ 1,926	$ 1,971	$ 1,926	$ 0
Retained Earnings (Accumulated Deficit), Ending Balance		129,130	109,710	129,130
Pre-Opening Costs			0	1,117	2,081
Advertising Expense			12,671	20,674	20,922
Payments to Acquire Fixed Assets and Inventory		2,225
Stock Issued During Period, Value, Purchase of Fixed Assets and Inventory		$ 375
Stock Issued During Period, Shares, Purchase of Fixed Assets and Inventory (in shares) | shares		24,590
Deliver Wholesale Merchandise to Customers [Member]
Selling, General and Administrative Expense, Delivery Costs		$ 18,402	14,779	18,402	17,511
Deliver Retail Merchandise to Customers [Member]
Selling, General and Administrative Expense, Delivery Costs		23,710	19,024	23,710	20,640
Accounting Standards Update 2016-02 [Member]
Lease, Right-of-Use Asset, Net						$ 146,585
Lease, Liability, Net						151,672
Deferred Income Tax Liabilities, Net, Total						1,302
Retained Earnings (Accumulated Deficit), Ending Balance						$ 3,785
Non-US [Member]
Revenues, Total			$ 789	$ 1,846	$ 1,587
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers			0	0	0
Sales Commissions [Member] | Other Current Assets [Member]
Capitalized Contract Cost, Net, Total		$ 2,435	$ 4,279	$ 2,435
Logistical Services [Member]
Invoice Payment Term (Day)			30 days
Goodwill, Impairment Loss			$ (0)	$ (0)
Logistical Services [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers			2	2	2
Concentration Risk, Percentage			29.00%	44.00%	40.00%
Minimum [Member]
Payment Terms For Wholesale Customers (Day)			30 days
Minimum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)			10 years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)			5 years
Minimum [Member] | Real Estate Lease [Member]
Lessee, Operating Lease, Term of Contract (Year)			1 year
Lessee, Operating Lease, Renewal Term (Year)			5 years
Maximum [Member]
Payment Terms For Wholesale Customers (Day)			60 days
Maximum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)			39 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)			10 years
Maximum [Member] | Real Estate Lease [Member]
Lessee, Operating Lease, Term of Contract (Year)			15 years
Lessee, Operating Lease, Renewal Term (Year)			15 years