Note 5 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Lease cost:
Amortization of right of use asset	$ 1,067
Interest on lease liabilities	368
Finance lease cost	1,435
Operating lease cost	7,900
Total lease cost	9,335
Operating cash flows from finance leases	368
Operating cash flows from operating leases	8,961
Financing cash flows from finance leases	1,616
	10,945
Right-of-use assets obtained in exchange for new finance lease liabilities for the three months ended June 29, 2019	237
Right-of-use assets obtained in exchange for new operating lease liabilities for the three months ended June 29, 2019	$ 4,538
Financing leases (Year)	5 years 255 days
Operating leases, lease term (Year)	4 years 36 days
Financing leases	4.20%
Operating leases, discount rate	4.60%