Note 12 - Other Financial Data - Balance Sheet Information (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Oct. 01, 2016
Accounts receivable, net:
Accounts receivable	$ 49,867	$ 47,680
Less allowance for doubtful accounts	(290)	(291)
Total	49,577	47,389
Inventories:
Raw materials	32,513	45,032
Work in process	2,939	2,788
Finished goods	23,778	23,366
Total	59,230	71,186
Other current assets:
Prepaid insurance	2,414	1,805
Other	850	1,234
Total	3,264	3,039
Other assets:
Cash surrender value of life insurance policies	8,469	7,909
Capitalized financing costs, net	138	170
Other	105	105
Total	8,712	8,184
Property, plant and equipment, net:
Land and land improvements	9,799	9,619
Buildings	44,250	43,739
Machinery and equipment	142,669	143,789
Construction in progress	18,900	11,318
Property, plant and equipment, gross	215,618	208,465
Less accumulated depreciation	(120,813)	(120,272)
Total	94,805	88,193
Accrued expenses:
Salaries, wages and related expenses	4,317	6,619
Customer rebates	785	1,296
Sales allowance reserves	472	577
Property taxes	424	1,328
Income taxes	301
Workers' compensation	123	127
Restructuring Reserve, Current	97	239
Other	703	838
Total	7,222	11,024
Other liabilities:
Deferred compensation	9,354	9,071
Deferred Tax Liabilities, Net, Noncurrent	6,382	5,472
Total	$ 15,736	$ 14,543