Note 13 - Capital Stock and Stock Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended	12 Months Ended
	Oct. 02, 2018	Mar. 08, 2018	Jan. 11, 2018	Mar. 01, 2017	Dec. 31, 2000	Nov. 24, 2018	Nov. 25, 2017	Nov. 26, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross						0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance						$ 8.02	$ 8.02
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term						2 years 219 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value						$ 102
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance						0
Payments Related to Tax Withholding for Share-based Compensation						$ 674	$ 641	$ 77
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount						223	$ 554	$ 87
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total						$ 1,627
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition						2 years
Stock Issued During Period, Shares, Employee Stock Purchase Plans						14,967	6,275	8,502
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			36,000			45,036
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period						63,138
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount						$ 207	$ 366	$ 46
Restricted Stock [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		6,036
Restricted Stock [Member] | One Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	3,000
Restricted Stock [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period						56,600
Shares Paid for Tax Withholding for Share Based Compensation						19,810	21,210	2,940
Payments Related to Tax Withholding for Share-based Compensation						$ 674	$ 641	$ 77
Restricted Stock [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period						6,538
The 2010 Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance						1,250,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent				85.00%	85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant						228,758