Note 5 - Leases - Undiscounted Future Lease Payments Under Operating Leases and Financial Leases (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Mar. 31, 2021	Sep. 26, 2020
Balance of 2022, operating	$ 6,914
Balance of 2022, financing	4,610
2023, operating	15,446
2023, financing	9,220
2024, operating	8,937
2024, financing	7,651
2025, operating	5,110
2025, financing	4,268
2026, operating	2,898
2026, financing	3,179
2027-2033, operating	7,524
2027-2033, financing	5,575
Total minimum payment required, operating	46,829
Total minimum payment required, financing	34,503
Less interest, operating	4,039
Less interest, financing	2,721
Present value of minimum lease payments, operating	42,790
Present value of minimum lease payments, financing	31,782
Amount due within one year, operating	15,837	$ 17,047	$ 18,476
Amount due within one year, financing	8,273	6,778	6,497
Long-term lease obligations	26,953	27,769	33,464
Long-term lease obligations	23,509	$ 19,232	$ 21,900
Current Portion of Long-term Debt and Lease Obligations [Member]
Amount due within one year, operating	$ 15,837