FAIR VALUE - QUANTITATIVE INFORMATION ABOUT LEVEL 3 FAIR VALUE MEASURMENTS (RECURRING) (Details) $ in Thousands	Sep. 30, 2022 USD ($) year	Jun. 30, 2022 USD ($) year
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale	$ 257,634	$ 262,518
Securities – Available-for-Sale: Non-Agency RMBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale	184,012	186,814
Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale	184,012	186,814
Mortgage servicing rights	26,373	25,213
Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale	257,634	262,518
Mortgage servicing rights	26,373	25,213
Recurring \| Securities – Available-for-Sale: Non-Agency RMBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale	184,012	186,814
Recurring \| Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale	184,012	186,814
Mortgage servicing rights	26,373	25,213
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale	$ 184,012	$ 186,814
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| 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 \| Securities – Available-for-Sale: Non-Agency RMBS \| Projected Constant Prepayment Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.300	0.300
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Projected Constant Prepayment Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.214	0.214
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| 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 \| Securities – Available-for-Sale: Non-Agency RMBS \| Projected Constant Default Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.159	0.079
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Projected Constant Default Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.023	0.022
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Projected Loss Severity \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.000	0.000
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Projected Loss Severity \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.686	0.684
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Projected Loss Severity \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.266	0.267
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Discount Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.027	0.027
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Discount Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.088	0.093
Recurring \| Level 3 \| Securities – Available-for-Sale: Non-Agency RMBS \| Discount Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.027	0.028
Recurring \| Level 3 \| Mortgage Servicing Rights
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing rights	$ 26,373	$ 25,213
Recurring \| Level 3 \| Mortgage Servicing Rights \| Projected Constant Prepayment Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.038	0.079
Recurring \| Level 3 \| Mortgage Servicing Rights \| Projected Constant Prepayment Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.380	0.563
Recurring \| Level 3 \| Mortgage Servicing Rights \| Projected Constant Prepayment Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.093	0.110
Recurring \| Level 3 \| Mortgage Servicing Rights \| Discount Rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.095	0.095
Recurring \| Level 3 \| Mortgage Servicing Rights \| Discount Rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.110	0.115
Recurring \| Level 3 \| Mortgage Servicing Rights \| Discount Rate \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.095	0.095
Recurring \| Level 3 \| Mortgage Servicing Rights \| Life (in years) \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	0.9	1.2
Recurring \| Level 3 \| Mortgage Servicing Rights \| Life (in years) \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	13.0	9.9
Recurring \| Level 3 \| Mortgage Servicing Rights \| Life (in years) \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	9.4	8.4
Recurring \| Level 3 \| Derivative Instruments, net
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative Instruments	$ 535	$ 464
Recurring \| Level 3 \| Derivative Instruments, net \| Projected Sales Profit of Underlying Loans \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative instruments, net, measurement input	(0.031)	(0.031)
Recurring \| Level 3 \| Derivative Instruments, net \| Projected Sales Profit of Underlying Loans \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative instruments, net, measurement input	0.012	0.008
Recurring \| Level 3 \| Derivative Instruments, net \| Projected Sales Profit of Underlying Loans \| Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative instruments, net, measurement input	(0.012)	(0.012)

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).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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-Publisher FASB
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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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-Publisher FASB
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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Section 45
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-URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

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