Note 6 - Borrowings - Funded Debt to Adjusted Ratio (Details)		12 Months Ended
	Jan. 21, 2022	Dec. 25, 2021
Funded Debt to Adjusted Ratio Greater than or equal to 2.50 to 1.0 [Member]
Revolving Eurodollar Borrowing		2.25%
ABR Revolving Borrowing	0.25%	0.25%
Letter of Credit Fee	2.00%	2.25%
Commitment Fee	0.30%	0.35%
Funded Debt to Adjusted Ratio Greater than or equal to 1.50 to 1.0 but less than 2.50 to 1.0 [Member]
Revolving Eurodollar Borrowing		2.00%
ABR Revolving Borrowing	(0.00%)	(0.00%)
Letter of Credit Fee	1.75%	2.00%
Commitment Fee	0.25%	0.35%
Information related to Funded Debt to Adjusted Ratio Less than 1.50 to 1.0 [Member]
Revolving Eurodollar Borrowing		1.75%
ABR Revolving Borrowing	(0.25%)	(0.25%)
Letter of Credit Fee	1.50%	1.75%
Commitment Fee	0.20%	0.35%