Note 14 - Segment Information - Total Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Total assets	$ 87,964	$ 72,852	$ 68,339
UNITED STATES
Total assets	81,558	67,296	56,308
CANADA
Total assets	1,640	1,327	7,067
PUERTO RICO
Total assets	1,401	963	1,483
SERBIA
Total assets	$ 3,365	$ 3,266	$ 3,481