Note M - Pension and Other Postretirement Benefit Plans - Pension Plan Weighted-Average Asset Allocations (Details) |
Jun. 30, 2026 |
Jun. 30, 2025 |
|---|---|---|
| Target Allocation | 100.00% | |
| Actual Allocation | 100.00% | 100.00% |
| Equity Securities [Member] | ||
| Target Allocation | 15.00% | |
| Actual Allocation | 16.00% | 15.00% |
| Debt Securities [Member] | ||
| Target Allocation | 75.00% | |
| Actual Allocation | 76.00% | 78.00% |
| Real Estate [Member] | ||
| Target Allocation | 10.00% | |
| Actual Allocation | 8.00% | 7.00% |