Note 14 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Nov. 25, 2017	Nov. 26, 2016	Nov. 28, 2015	Nov. 29, 2014
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount	$ 554	$ 87
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation			$ 1,998
Deferred Tax Assets, Valuation Allowance	0	0		$ 70
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			70
Income Taxes Paid, Net	7,516	9,949	5,906
Unrecognized Tax Benefits Interest Expense Recovery	10	15	(144)
Unrecognized Tax Benefits Income Tax Penalties Expense Recovery	11	$ 10	$ 3
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 4,856
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards, Expiration Year	2021
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards, Expiration Year	2027