Note 5 - Computation of Net Income Per Share of Common Stock (Details Textual) - shares |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 929,428 | 553,740 | 680,922 | 514,535 |
| Performance Shares [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 927,316 | 553,334 | 679,866 | 513,926 |
| Share-Based Payment Arrangement, Option [Member] | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 2,112 | 406 | 1,056 | 609 |