Note 3 - Deferred Compensation Units (Details)	3 Months Ended
	Feb. 27, 2016 shares
Non Employee Directors [Member]
Units outstanding (in shares)	380,170
Participant contributions (in shares)	9,742
Company match contributions (in shares)	975
Payouts (in shares)
Units outstanding (in shares)	390,887
Employees [Member]
Units outstanding (in shares)	45,906
Participant contributions (in shares)	2,118
Company match contributions (in shares)	212
Payouts (in shares)	(4,351)
Units outstanding (in shares)	43,885
Units outstanding (in shares)	426,076
Participant contributions (in shares)	11,860
Company match contributions (in shares)	1,187
Payouts (in shares)	(4,351)
Units outstanding (in shares)	434,772