Note 13 - Business Segments - Long-lived Assets By Geographical Area (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2022
Property, plant and equipment, net	$ 65,611	$ 74,109	$ 74,109
UNITED STATES
Property, plant and equipment, net	49,174	54,200
HONDURAS
Property, plant and equipment, net	10,856	13,366
EL SALVADOR
Property, plant and equipment, net	4,826	5,381
MEXICO
Property, plant and equipment, net	755	1,162
Non-US [Member]
Property, plant and equipment, net	$ 16,437	$ 19,909