Note 6 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Mar. 31, 2025
Operating Lease, Right-of-Use Asset	$ 4,906	$ 2,841
Total right-of-use assets	4,906	2,841
Operating lease liability, current	753	160
Operating lease liability, non-current	4,283	2,752
Total lease liabilities	$ 5,036	$ 2,912