Note 7 - Leases - Supplemental Balance Sheet Information (Details) (Parentheticals) |
Jun. 30, 2026 |
Mar. 31, 2026 |
|---|---|---|
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization | Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization |