Note 11 - Post Employment Benefit Obligations - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	12 Months Ended
Nov. 30, 2019	Nov. 24, 2018	Nov. 25, 2017
Service cost	$ 190	$ 196	$ 146
Interest cost	441	418	423
Amortization of transition obligation	0	42	42
Amortization of prior service cost	126	126	0
Amortization of other loss	183	262	323
Net periodic pension cost	$ 940	$ 1,044	$ 934
Discount rate	4.00%	3.50%	3.75%
Increase in future compensation levels	3.00%	3.00%	3.00%

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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Amount of transition asset (obligation) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

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Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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