Note 11 - Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Operating cash flows from operating leases	$ 6,716	$ 7,628
Operating cash flows from finance leases	1	1
Financing cash flows from finance leases	167	186	$ 146
Leased assets obtained in exchange for new finance lease liabilities	0	54
Leased assets obtained in exchange for new operating lease liabilities	$ 2,874	$ 3,866