Investment Securities - Schedule of Allowance for Credit Losses on Investment Securities (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
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| Available-for-Sale Investment Securities | |||
| Beginning balance | $ 0 | $ 2,195,000 | $ 2,195,000 |
| Recovery of credit losses | 0 | 0 | (2,195,000) |
| Ending balance | 0 | 2,195,000 | 0 |
| Held-to-Maturity Investment Securities | |||
| Beginning balance | 2,005,000 | 2,005,000 | 2,005,000 |
| Provision for credit losses | 0 | 0 | 0 |
| Ending balance | $ 2,005,000 | $ 2,005,000 | $ 2,005,000 |
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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| X | ||||||||||
- Definition Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, excluding accrued interest, of increase (decrease) in allowance for credit loss of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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