Note 9 - Employee Benefit Plans - Net Periodic Pension Costs and Related Components (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 02, 2022	Apr. 03, 2021	Apr. 02, 2022	Apr. 03, 2021
Interest cost	$ 87	$ 79	$ 174	$ 158
Service cost	100	78	200	156
Recognized net actuarial loss	69	54	138	108
Net periodic pension cost	$ 256	$ 211	$ 512	$ 422

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

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- Details

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