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v3.23.2

SECURITIES - Narrative (Details) | 9 Months Ended |
--- | --- | ---
Jun. 30, 2023 USD ($) security | Jun. 30, 2022 USD ($) | Sep. 30, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |
AFS number of securities in an unrealized loss position (in securities) | security | 203 |  |
Federal reserve bank stock | $ 19,700,000 |  | $ 19,700,000
Federal home loan bank stock | 11,200,000 |  | 9,100,000
Impairment recognized | 3,200,000 | $ 0 |
Marketable |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Equity securities | 3,500,000 |  | 2,900,000
Unrealized losses on equity securities | 200,000 | 3,800,000 |
Non-marketable |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Equity securities | 8,500,000 |  | 7,200,000
Unrealized losses on equity securities | 100,000 |  |
Unrealized gains on equity securities |  | $ 600,000 |
Equity securities without readily determinable fair value, amount | $ 15,800,000 |  | $ 18,200,000

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