Note 5 - Leases - Undiscounted Future Lease Payments Under Operating Leases and Financial Leases (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Mar. 31, 2019	Jun. 30, 2018
Balance of 2020, operating	$ 21,295
Balance of 2020, financing	5,916
2021, operating	27,507
2021, financing	7,888
2022, operating	19,738
2022, financing	7,888
2023, operating	13,623
2023, financing	7,888
2024, operating	6,834
2024, financing	6,141
2025-2031, operating	6,839
2025-2031, financing	5,268
Total minimum payment required, operating	95,836
Total minimum payment required, financing	40,989
Less interest, operating	8,216
Less interest, financing	4,509
Operating Lease, Liability, Total	87,620
Present value of minimum lease payments, financing	36,480
Amount due within one year, operating	26,641
Amount due within one year, financing	6,573
Long-term lease obligations, operating	60,979
Long-term lease obligations, financing	$ 29,907