Note 11 - Employee Benefit Plans - Projected Benefit Obligation Reconciliation for SERP (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	12 Months Ended
Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Benefit obligation	$ 11,610	$ 11,278	$ 9,749
Service cost	312	338	297
Interest cost	316	334	384
Actuarial loss (gain)	855	(91)	1,133
Distributions	(205)	(249)	(285)
Benefit obligation	12,888	11,610	11,278
Actual employer contributions	205	249	285
Actual distributions	(205)	(249)	(285)
Fair value of plan assets	0	0	0
Funded status	(12,888)	(11,610)	(11,278)
Net amount recognized	(12,888)	(11,610)	(11,278)
Unrecognized net loss	3,213	2,574	2,958
Net amount recognized	3,213	2,574	2,958
Net loss (gain)	855	(91)	1,133
Amortization of net loss	(215)	(294)	(140)
Total recognized in other comprehensive income (loss)	$ 640	$ (385)	$ 993

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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