Note 12 - Other Financial Data - Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Sep. 29, 2018
Accounts receivable, net:
Accounts receivable	$ 50,862	$ 51,779
Less allowance for doubtful accounts	(288)	(295)
Total	50,574	51,484
Inventories:
Raw materials	59,065	61,008
Work in process	5,810	4,779
Finished goods	52,352	28,370
Total	117,227	94,157
Other current assets:
Prepaid insurance	3,774	3,845
Income tax receivable	1,430
Other	1,061	2,050
Total	6,265	5,895
Other assets:
Cash surrender value of life insurance policies	10,076	9,769
Capitalized financing costs, net	8	40
Other	104	104
Total	10,188	9,913
Property, plant and equipment, net:
Land and land improvements	14,491	14,438
Buildings	56,191	54,684
Machinery and equipment	169,362	160,068
Construction in progress	5,747	9,672
Property, plant and equipment, gross	245,791	238,862
Less accumulated depreciation	(136,414)	(132,714)
Total	109,377	106,148
Accrued expenses:
Salaries, wages and related expenses	2,567	6,775
Sales allowance reserves	1,406	804
Customer rebates	624	1,531
Property taxes	623	1,585
Workers' compensation	113	113
Income taxes		469
Other	658	652
Total	5,991	11,929
Other liabilities:
Deferred compensation	11,085	10,541
Deferred Tax Liabilities, Net, Noncurrent	7,476	5,340
Total	$ 18,561	$ 15,881