Note 6 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Lease cost:
Amortization of right of use asset	$ 1,186	$ 1,067
Interest on lease liabilities	294	368
Finance lease cost	1,480	1,435
Operating lease cost	6,407	7,900
Total lease cost	7,887	9,335
Operating cash flows from finance leases	294	368
Operating cash flows from operating leases	7,278	8,961
Financing cash flows from finance leases	1,536	1,616
Payments for Amounts Included in the Measurement of Lease Liabilities, Total	9,108	10,945
Right-of-use assets obtained in exchange for new finance lease liabilities	35	237
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 2,340	$ 4,538
Financing leases (Year)	5 years 1 month 6 days	5 years 8 months 12 days
Operating leases, lease term (Year)	3 years 8 months 12 days	4 years 1 month 6 days
Financing leases	4.10%	4.20%
Operating leases, discount rate	4.40%	4.60%