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SECURITIES - NARRATIVE (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) security | Mar. 31, 2023 USD ($) security | Jun. 30, 2022 USD ($) security
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale | $ 279,612,000 | $ 279,612,000 | $ 262,518,000
Number of available-for-sale securities in continuous loss position for a period of more than 12 months | security | 29 | 29 | 14
Number of available-for-sale securities in continuous loss position for a period of less than 12 months | security | 25 | 25 | 25
Carrying amount of securities with cumulative credit losses | $ 1,500,000 | $ 1,500,000 |
Cumulative credit losses | 800,000 | $ 800,000 |
Number of available-for-sale securities sold | security |  | 0 |
Asset Pledged as Collateral |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale securities pledged as collateral | 1,100,000 | $ 1,100,000 | $ 1,200,000
Non-agency |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale | $ 206,300,000 | $ 206,300,000 | $ 186,814,000
Number of non-agency RMBS | security | 1 | 1 |
Credit losses recognized in earnings | $ 0 |  |
RMBS, Super Senior Securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale, number of securities | security | 18 | 18 |

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