Note 5 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Amortization of right of use asset	$ 1,546	$ 1,145	$ 2,841	$ 2,331
Interest on lease liabilities	279	278	536	572
Finance lease cost	1,825	1,423	3,377	2,903
Operating lease cost	4,960	6,239	9,960	12,646
Total lease cost	$ 6,785	$ 7,662	13,337	15,549
Operating cash flows from finance leases			536	572
Operating cash flows from operating leases			12,248	15,211
Financing cash flows from finance leases			3,759	3,072
Payments for Amounts Included in the Measurement of Lease Liabilities, Total			16,543	18,855
Right-of-use assets obtained in exchange for new finance lease liabilities			9,531	1,122
Right-of-use assets obtained in exchange for new operating lease liabilities			$ 9,235	$ 2,559
Financing leases, lease term (Year)	4 years 9 months 18 days	4 years 10 months 24 days	4 years 9 months 18 days	4 years 10 months 24 days
Operating leases, lease term (Year)	4 years 2 months 12 days	3 years 7 months 6 days	4 years 2 months 12 days	3 years 7 months 6 days
Financing leases, discount rate	3.40%	4.10%	3.40%	4.10%
Operating leases, discount rate	4.20%	4.40%	4.20%	4.40%