Note 15 - Retirement Plan (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 50.00% | |
| Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 6.00% | |
| Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 875,000 | $ 833,000 |