FAIR VALUE - QUANTITATIVE INFORMATION ABOUT LEVEL 3 FAIR VALUE MEASURMENTS (RECURRING) (Details) $ in Thousands	Mar. 31, 2024 USD ($) year a	Jun. 30, 2023 USD ($) year
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	$ 207,582	$ 232,350
Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	176,679	205,005
Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	176,679	205,005
Servicing rights	28,130	25,443
Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	207,582	232,350
Servicing rights	28,130	25,443
Recurring \| Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	176,679	205,005
Recurring \| Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	176,679	205,005
Servicing rights	28,130	25,443
Recurring \| Level 3 \| Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS	$ 176,679	$ 205,005
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	0.623	0.597
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	0.428	0.320
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	0.256	0.075
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	0.029	0.024
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	0.687	0.687
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	0.337	0.285
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	0.026
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	0.065	0.075
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	0.025	0.027
Recurring \| Level 3 \| Servicing Rights
Fair Value, Option, Quantitative Disclosures [Line Items]
Servicing rights	$ 28,130	$ 25,443
Recurring \| Level 3 \| Servicing Rights \| Projected Constant Prepayment Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.055	0.061
Recurring \| Level 3 \| Servicing Rights \| Projected Constant Prepayment Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.952	0.401
Recurring \| Level 3 \| Servicing Rights \| Projected Constant Prepayment Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.118	0.126
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	0.115
Recurring \| Level 3 \| Servicing Rights \| Discount Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.098	0.096
Recurring \| Level 3 \| Servicing Rights \| Life (in years) \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	0.4	1.8
Recurring \| Level 3 \| Servicing Rights \| Life (in years) \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	14.9	10.9
Recurring \| Level 3 \| Servicing Rights \| Life (in years) \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	7.9	7.7

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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