Note 14 - Components of Income Tax Provision (Benefit) (Details) - USD ($)	12 Months Ended
	Nov. 28, 2015	Nov. 29, 2014	Nov. 30, 2013
Current:
Federal	$ 7,972,000	$ 4,168,000	$ 759,000
State	1,533,000	596,000	50,000
Deferred:
Increase (decrease) in valuation allowance	(70,000)	(974,000)	136,000
Federal	1,520,000	221,000	1,970,000
State	480,000	1,297,000	176,000
Total	$ 11,435,000	$ 5,308,000	$ 3,091,000