FAIR VALUE - SCHEDULE OF QUANTITATIVE INFORMATION ABOUT LEVEL 3 FAIR VALUE MEASURMENTS (RECURRING) (Details) $ in Thousands	Sep. 30, 2026 USD ($) a year	Jun. 30, 2026 USD ($) a year
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS \| $	$ 780,585	$ 803,667
Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS \| $	4,094	4,273
Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS \| $	4,094	4,273
Servicing rights \| $	26,469	25,653
Loans held for investment—net \| $	25,962,440	25,789,184
Other assets—Equity instruments \| $	8,700
Accounts payable and other liabilities—Contingent Consideration \| $	29,685	30,810
Level 3 \| Available-for-sale Securities: Non-Agency MBS
Fair Value, Option, Quantitative Disclosures [Line Items]
Available-for-sale securities: Non-Agency MBS \| $	$ 4,094	$ 4,273
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Minimum \| Projected Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.025	0.025
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Minimum \| Projected Constant Default Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.015	0.015
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Minimum \| Projected Loss Severity
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.400	0.400
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Minimum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.025	0.025
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Minimum \| Credit Enhancement
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.000	0.000
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Maximum \| Projected Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.083	0.157
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Maximum \| Projected Constant Default Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.019	0.019
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Maximum \| Projected Loss Severity
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.689	0.689
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Maximum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.045	0.047
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Maximum \| Credit Enhancement
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.780	0.782
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Weighted Average \| Projected Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.038	0.040
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Weighted Average \| Projected Constant Default Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.015	0.015
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Weighted Average \| Projected Loss Severity
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.612	0.610
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Weighted Average \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.032	0.032
Level 3 \| Available-for-sale Securities: Non-Agency MBS \| Weighted Average \| Credit Enhancement
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities available-for-sale, measurement input	0.131	0.132
Level 3 \| Servicing Rights
Fair Value, Option, Quantitative Disclosures [Line Items]
Servicing rights \| $	$ 26,469	$ 25,653
Level 3 \| Servicing Rights \| Minimum \| Projected Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.025	0.041
Level 3 \| Servicing Rights \| Minimum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.095	0.095
Level 3 \| Servicing Rights \| Minimum \| Life (in years)
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	2.5	2.7
Level 3 \| Servicing Rights \| Maximum \| Projected Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.329	0.307
Level 3 \| Servicing Rights \| Maximum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.112	0.112
Level 3 \| Servicing Rights \| Maximum \| Life (in years)
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	14.2	14.2
Level 3 \| Servicing Rights \| Weighted Average \| Projected Constant Prepayment Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.100	0.102
Level 3 \| Servicing Rights \| Weighted Average \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input	0.097	0.098
Level 3 \| Servicing Rights \| Weighted Average \| Life (in years)
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage servicing right, measurement input \| year	8.8	8.6
Level 3 \| Other assets—Loans held for investment at fair value
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for investment—net \| $	$ 11,000	$ 10,000
Level 3 \| Other assets—Loans held for investment at fair value \| Minimum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input	0.092	0.280
Level 3 \| Other assets—Loans held for investment at fair value \| Minimum \| Probability
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input \| a	0.400
Level 3 \| Other assets—Loans held for investment at fair value \| Minimum \| Recovery Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input \| a	0.100
Level 3 \| Other assets—Loans held for investment at fair value \| Minimum \| Terminal Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input		0.030
Level 3 \| Other assets—Loans held for investment at fair value \| Minimum \| EBITDA Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input		1.0
Level 3 \| Other assets—Loans held for investment at fair value \| Maximum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input	0.093	0.280
Level 3 \| Other assets—Loans held for investment at fair value \| Maximum \| Probability
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input \| a	0.600
Level 3 \| Other assets—Loans held for investment at fair value \| Maximum \| Recovery Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input \| a	0.250
Level 3 \| Other assets—Loans held for investment at fair value \| Maximum \| Terminal Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input		0.030
Level 3 \| Other assets—Loans held for investment at fair value \| Maximum \| EBITDA Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input		1.0
Level 3 \| Other assets—Loans held for investment at fair value \| Weighted Average \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input	0.092	0.280
Level 3 \| Other assets—Loans held for investment at fair value \| Weighted Average \| Probability
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input \| a	0.413
Level 3 \| Other assets—Loans held for investment at fair value \| Weighted Average \| Recovery Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input \| a	0.163
Level 3 \| Other assets—Loans held for investment at fair value \| Weighted Average \| Terminal Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input		0.030
Level 3 \| Other assets—Loans held for investment at fair value \| Weighted Average \| EBITDA Multiple
Fair Value, Option, Quantitative Disclosures [Line Items]
Alternative investment, measurement input		1.0
Level 3 \| Other assets—Equity instruments
Fair Value, Option, Quantitative Disclosures [Line Items]
Other assets—Equity instruments \| $	$ 8,700
Level 3 \| Other assets—Equity instruments \| Minimum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument, measurement input	0.115
Level 3 \| Other assets—Equity instruments \| Minimum \| Terminal Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument, measurement input	0.009
Level 3 \| Other assets—Equity instruments \| Maximum \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument, measurement input	0.130
Level 3 \| Other assets—Equity instruments \| Maximum \| Terminal Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument, measurement input	0.022
Level 3 \| Other assets—Equity instruments \| Weighted Average \| Discount Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument, measurement input	0.128
Level 3 \| Other assets—Equity instruments \| Weighted Average \| Terminal Growth Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Debt instrument, measurement input	0.020
Level 3 \| Accounts payable and other liabilities—Contingent Consideration
Fair Value, Option, Quantitative Disclosures [Line Items]
Accounts payable and other liabilities—Contingent Consideration \| $	$ 29,685	$ 30,810
Level 3 \| Accounts payable and other liabilities—Contingent Consideration \| Minimum \| Monthly Asset Growth
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration, measurement input \| a	(0.074)	0.074
Level 3 \| Accounts payable and other liabilities—Contingent Consideration \| Minimum \| Credit Spread
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration, measurement input \| a	0.029	0.029
Level 3 \| Accounts payable and other liabilities—Contingent Consideration \| Maximum \| Monthly Asset Growth
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration, measurement input \| a	0.145	0.145
Level 3 \| Accounts payable and other liabilities—Contingent Consideration \| Maximum \| Credit Spread
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration, measurement input \| a	0.029	0.029
Level 3 \| Accounts payable and other liabilities—Contingent Consideration \| Weighted Average \| Monthly Asset Growth
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration, measurement input \| a	0.036	0.036
Level 3 \| Accounts payable and other liabilities—Contingent Consideration \| Weighted Average \| Credit Spread
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration, measurement input \| a	0.029	0.029

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Amount of liability recognized arising from contingent consideration in a business combination.

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