FAIR VALUE - QUANTITATIVE INFORMATION ABOUT LEVEL 3 FAIR VALUE MEASURMENTS (RECURRING) (Details) $ in Thousands	Sep. 30, 2024 USD ($) year	Jun. 30, 2024 USD ($) year
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	$ 137,996	$ 141,611
Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	91,309	110,928
Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	91,309	110,928
Servicing rights	27,335	28,924
Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	137,996	141,611
Servicing rights	27,335	28,924
Recurring \| Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	91,309	110,928
Recurring \| Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	91,309	110,928
Servicing rights	27,335	28,924
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	$ 91,309	$ 110,928
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Constant Prepayment Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.000	0.000
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Constant Prepayment Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.696	0.721
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Constant Prepayment Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.345	0.380
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Constant Default Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.000	0.000
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Constant Default Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.055	0.137
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Constant Default Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.026	0.028
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Loss Severity \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.000	0.000
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Loss Severity \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.689	0.689
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Projected Loss Severity \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.326	0.329
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Discount Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.025	0.025
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Discount Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.049	0.049
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Discount Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.026	0.025
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Credit Enhancement \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.000	0.000
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Credit Enhancement \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.643	0.649
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Credit Enhancement \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.261	0.228
Recurring \| Level 3 \| Servicing Rights
Fair Value, Option, Quantitative Disclosures [Line Items]
Servicing rights	$ 27,335	$ 28,924
Recurring \| Level 3 \| Servicing Rights \| Projected Constant Prepayment Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.052	0.055
Recurring \| Level 3 \| Servicing Rights \| Projected Constant Prepayment Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.242	0.952
Recurring \| Level 3 \| Servicing Rights \| Projected Constant Prepayment Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.109	0.118
Recurring \| Level 3 \| Servicing Rights \| Discount Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.095	0.095
Recurring \| Level 3 \| Servicing Rights \| Discount Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.112	0.112
Recurring \| Level 3 \| Servicing Rights \| Discount Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.098	0.098
Recurring \| Level 3 \| Servicing Rights \| Life (in years) \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	2.4	0.4
Recurring \| Level 3 \| Servicing Rights \| Life (in years) \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	11.1	14.9
Recurring \| Level 3 \| Servicing Rights \| Life (in years) \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	8.3	7.9

Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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