Note 7 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2023	May 23, 2023	Mar. 31, 2023	Jan. 20, 2023	Oct. 01, 2022
Long-term debt	$ 511,901		$ 442,695		$ 320,345
Long-term debt	511,901		442,695		320,345
Total long-term debt	511,901		442,695		320,345
Less current portion	19,216		10,000		4,000
Long-term debt, less current portion	492,685		432,695		316,345
Line of Credit [Member]
Long-term debt	134,757		180,598		229,213
Long-term debt	134,757		180,598		229,213
Term Loan A-1 [Member]
Long-term debt	86,947		88,932	$ 100,000	90,916
Outstanding principal	87,000		89,000		91,000
Unamortized debt issuance costs	(53)		(68)		(84)
Long-term debt	86,947		88,932	100,000	90,916
Term Loan A-2 [Member]
Long-term debt	289,981	$ 173,500	172,949	175,000	0
Outstanding principal	291,000		173,500		0
Unamortized debt issuance costs	(1,019)		(551)		0
Long-term debt	289,981	$ 173,500	172,949	$ 175,000	0
Other [Member]
Long-term debt	216		216		216
Long-term debt	$ 216		$ 216		$ 216