Note 10 - Post Employment Benefit Obligations (Details) - Pension Liability (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Nov. 29, 2014
Note 10 - Post Employment Benefit Obligations (Details) - Pension Liability [Line Items]
Post employment benefit obligations	$ 11,444	$ 11,498
Supplemental Employee Retirement Plan [Member]
Note 10 - Post Employment Benefit Obligations (Details) - Pension Liability [Line Items]
Accrued compensation and benefits	724	724
Post employment benefit obligations	9,634	9,652
Total pension liability	10,358	10,376
Unfunded Deferred Compensation Plan [Member]
Note 10 - Post Employment Benefit Obligations (Details) - Pension Liability [Line Items]
Accrued compensation and benefits	328	328
Post employment benefit obligations	1,809	1,846
Total pension liability	$ 2,137	$ 2,174