Available-for-sale Securities - Gains and Losses from Sales of Available-for-sale Securities (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Available-for-sale Securities | |||
| Net realized gains (losses) on sale of AFS securities | $ 0 | $ 48,000 | $ (1,489,000) |
| Gains recognized from sales of available-for-sale securities | 48,000 | 67,000 | |
| Losses recognized from sales of available-for-sale securities | $ 0 | $ 1,600,000 | |