Note 8 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Amortization of ROU assets	$ 1,644	$ 1,668	$ 3,484	$ 3,257
Interest on lease liabilities	199	242	422	481
Finance lease cost	1,843	1,910	3,906	3,738
Operating lease cost	1,809	3,657	4,158	7,884
Total lease cost	$ 3,652	$ 5,567	8,064	11,622
Operating cash flows from finance leases			422	481
Operating cash flows from operating leases			6,976	10,404
Financing cash flows from finance leases			4,560	4,287
Payments for Amounts Included in the Measurement of Lease Liabilities, Total			11,958	15,172
ROU assets obtained in exchange for new finance lease liabilities			73	3,298
ROU assets obtained in exchange for new operating lease liabilities			$ 4,063	$ 1,868
Financing leases (Year)	4 years 6 months	4 years 7 months 6 days	4 years 6 months	4 years 7 months 6 days
Operating leases, lease term (Year)	4 years 8 months 12 days	4 years 6 months	4 years 8 months 12 days	4 years 6 months
Financing leases	3.90%	3.50%	3.90%	3.50%
Operating leases, discount rate	4.70%	4.20%	4.70%	4.20%