Note 6 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 26, 2020	Dec. 28, 2019
Amortization of right of use asset	$ 1,200	$ 1,084	$ 3,531	$ 3,191
Interest on lease liabilities	271	321	843	1,033
Finance lease cost	1,471	1,405	4,374	4,224
Operating lease cost	5,832	7,545	18,478	23,234
Total lease cost	$ 7,303	$ 8,950	22,852	27,458
Operating cash flows from finance leases			843	1,033
Operating cash flows from operating leases			19,833	24,531
Financing cash flows from finance leases			4,681	4,799
Payments for Amounts Included in the Measurement of Lease Liabilities, Total			25,357	30,363
Right-of-use assets obtained in exchange for new finance lease liabilities			1,489	3,697
Right-of-use assets obtained in exchange for new operating lease liabilities			$ 3,725	$ 6,085
Financing leases (Year)	4 years 8 months 12 days	5 years 4 months 24 days	4 years 8 months 12 days	5 years 4 months 24 days
Operating leases, lease term (Year)	3 years 6 months	3 years 10 months 24 days	3 years 6 months	3 years 10 months 24 days
Financing leases	4.10%	4.20%	4.10%	4.20%
Operating leases, discount rate	4.40%	4.60%	4.40%	4.60%