Note 6 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 30, 2023	May 23, 2023	Mar. 31, 2023	Jan. 20, 2023	Dec. 31, 2022
Long-term debt	$ 630,563		$ 442,695		$ 403,948
Long-term debt	630,563		442,695		403,948
Total long-term debt	630,563		442,695		403,948
Less current portion	19,214		10,000		4,000
Long-term debt, less current portion	611,349		432,695		399,948
Line of Credit [Member]
Long-term debt	258,108		180,598		313,808
Long-term debt	258,108		180,598		313,808
Term Loan A-1 [Member]
Long-term debt	85,955		88,932	$ 100,000	89,924
Outstanding principal	86,000		89,000		90,000
Unamortized debt issuance costs	(45)		(68)		(76)
Long-term debt	85,955		88,932	100,000	89,924
Term Loan A-2 [Member]
Long-term debt	286,286	$ 173,500	172,949	175,000	0
Outstanding principal	287,250		173,500		0
Unamortized debt issuance costs	(964)		(551)		0
Long-term debt	286,286	$ 173,500	172,949	$ 175,000	0
Other [Member]
Long-term debt	214		216		216
Long-term debt	$ 214		$ 216		$ 216