Note 4 - Accounts Receivable - Activity in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	5 Months Ended	6 Months Ended
	May 08, 2022	May 28, 2022
Balance at November 27, 2021	$ 567	$ 567
Additions charged to expense		180
Write-offs against allowance	$ 12
Balance at May 28, 2022		$ 759