Note 12 - Other Financial Data - Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Sep. 30, 2023
Accounts receivable	$ 55,973	$ 63,735
Less allowance for credit losses	(424)	(311)
Total	55,549	63,424
Raw materials	37,307	39,341
Work in process	6,028	5,852
Finished goods	49,195	58,113
Total	92,530	103,306
Prepaid insurance	3,874	4,043
Income tax receivable	872	0
Other	2,929	2,410
Total	7,675	6,453
Cash surrender value of life insurance policies	12,008	10,586
Right-of-use asset	2,266	1,939
Capitalized financing costs, net	150	175
Other	109	111
Total	14,533	12,811
Land and land improvements	15,291	15,107
Buildings	56,969	56,653
Machinery and equipment	216,033	198,528
Construction in progress	13,428	18,019
Property, Plant and Equipment, Gross	301,721	288,307
Less accumulated depreciation	(174,187)	(168,293)
Total	127,534	120,014
Salaries, wages and related expenses	2,517	5,082
Sales allowance reserves	2,193	745
Customer rebates	778	2,132
Property taxes	697	1,912
State sales and use taxes	236	268
Income taxes	0	187
Other	482	484
Total	7,975	11,809
Deferred compensation	11,727	11,374
Deferred Tax Liabilities, Net	10,312	7,543
Total	23,222	19,853
Accrued Expenses, Current [Member]
Operating lease liability	1,072	999
Other Noncurrent Liabilities [Member]
Operating lease liability	$ 1,183	$ 936