Note 5 - Leases - Undiscounted Future Lease Payments Under Operating Leases and Financial Leases (Details) - USD ($) $ in Thousands	Sep. 28, 2019	Mar. 31, 2019	Sep. 29, 2018
Balance of 2020, operating	$ 11,984
Balance of 2020, financing	3,651
2021, operating	27,300
2021, financing	7,300
2022, operating	19,666
2022, financing	7,300
2023, operating	13,516
2023, financing	7,300
2024, operating	6,518
2024, financing	5,583
2025-2031, operating	7,169
2025-2031, financing	5,748
Total minimum payment required, operating	86,153
Total minimum payment required, financing	36,882
Less interest, operating	7,385
Less interest, financing	3,972
Operating Lease, Liability, Total	78,768
Present value of minimum lease payments, financing	32,910
Amount due within one year, operating	25,776
Amount due within one year, financing	6,137
Long-term lease obligations, operating	52,992
Long-term lease obligations, financing	$ 26,773