Note 3 - Deferred Compensation Units (Details)	9 Months Ended
	Aug. 27, 2016 shares
Non Employee Directors [Member]
Units outstanding (in shares)	380,170
Participant contributions (in shares)	35,678
Company match contributions (in shares)	3,568
Payouts (in shares)	(301)
Units outstanding (in shares)	419,115
Employees [Member]
Units outstanding (in shares)	45,906
Participant contributions (in shares)	4,379
Company match contributions (in shares)	438
Payouts (in shares)	(7,834)
Units outstanding (in shares)	42,889
Units outstanding (in shares)	426,076
Participant contributions (in shares)	40,057
Company match contributions (in shares)	4,006
Payouts (in shares)	(8,135)
Units outstanding (in shares)	462,004