Note 2 - Interim Financial Presentation (Details Textual)	3 Months Ended		6 Months Ended		12 Months Ended
	May 30, 2020	Jun. 01, 2019	May 30, 2020	Jun. 01, 2019	Nov. 30, 2019	Nov. 24, 2018
Effective Income Tax Rate Reconciliation, Percent, Total	(36.40%)	20.00%	(36.50%)	23.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					21.00%	35.00%