Note 11 - Operating Segment and Geographic Information - Net Sales by Country (Details) - USD ($) $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	Dec. 31, 2022	Oct. 01, 2022	Mar. 19, 2022	Dec. 25, 2021	Oct. 02, 2021	Mar. 20, 2021	Jul. 09, 2022	Jul. 10, 2021	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Net Sales	$ 72,136	$ 74,904	$ 72,380	$ 73,444	$ 81,298	$ 59,191	$ 94,337	$ 99,679	$ 313,757	$ 313,612	$ 273,649
North America [Member]
Net Sales									307,318	309,211	270,173
Europe [Member]
Net Sales									3,036	2,153	1,555
Other [Member]
Net Sales									$ 3,403	$ 2,248	$ 1,921