Note 11 - Employee Benefit Plans - Projected Benefit Obligation Reconciliation for SERP (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 03, 2020
Benefit obligation at beginning of year	$ 12,888	$ 11,610	$ 11,278
Service cost	399	312	338
Interest cost	347	316	334
Actuarial (gain) loss	(1,650)	855	(91)
Distributions	(205)	(205)	(249)
Benefit obligation at end of year	11,779	12,888	11,610
Actual employer contributions	205	205	249
Actual distributions	(205)	(205)	(249)
Plan assets at fair value at end of year	0	0	0
Funded status	(11,779)	(12,888)	(11,610)
Net amount recognized	(11,779)	(12,888)	(11,610)
Unrecognized net loss	1,285	3,213	2,574
Net amount recognized	1,285	3,213	2,574
Net (gain) loss	(1,650)	855	(91)
Amortization of net loss	(278)	(215)	(294)
Total recognized in other comprehensive (loss) income	$ (1,928)	$ 640	$ (385)