Note 8 - Long-term Debt - Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 02, 2021
Contractual interest	$ 4,500	$ 2,304	$ 3,319
Amortization of original issuance discount and debt costs	310	362	400
Total interest expense related to long-term debt	$ 4,810	$ 2,666	$ 3,719