Note 8 - Leases - Undiscounted Future Lease Payments Under Operating Leases and Financial Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022	Jan. 01, 2022
Balance of 2023, operating	$ 1,432
Balance of 2023, financing	2,467
2024, operating	9,217
2024, financing	8,393
2025, operating	6,025
2025, financing	5,061
2026, operating	3,533
2026, financing	3,975
2027, operating	3,021
2027, financing	2,917
2028-2033, operating	5,521
2028-2033, financing	5,278
Total minimum payment required, operating	28,749
Total minimum payment required, financing	28,091
Less interest, operating	2,631
Less interest, financing	2,264
Present value of minimum lease payments, operating	26,118
Present value of minimum lease payments, financing	25,827
Amount due within one year, operating	8,899
Amount due within one year, financing	8,445
Long-term lease obligations	17,219	$ 22,533	$ 24,533
Long-term lease obligations	$ 17,382	$ 19,942	$ 21,587