Note 10 - Major Customers and Export Sales - Foreign Revenue (Details)	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
MOROCCO
Foreign revenue by country	89.00%
Mid-East and Africa [Member]
Foreign revenue by geographical area	100.00%	100.00%
SAUDI ARABIA
Foreign revenue by country	11.00%	100.00%