FAIR VALUE MEASUREMENTS - Unobservable Units (Details) $ in Thousands	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, at fair value	$ 281,198	$ 369,746
Residuals in securitizations, at fair value	76,701	0
Servicing asset	15,358	22,062
Other real estate owned	7,570	3,764
Equity warrants	81	133
Servicing assets at fair value	44,922	46,257
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets at fair value	15,358	22,062
Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets at fair value	29,564	24,195
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, at fair value	281,198	369,746
Loans, held for sale, fair value disclosure	647,370	372,286
Residuals in securitizations, at fair value	76,701
Servicing asset	15,358	22,062
Assets held for sale		21,308
Other real estate owned	7,570	3,764
Equity warrants	81	133
Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	47,719	57,678
Joint Ventures and Other Investments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	38,856	57,678
Unguaranteed Investments Accrual | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, at fair value	208,655	302,442
Unguaranteed Investments Non-Accrual | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, at fair value	$ 72,543	67,304
Market yields | Joint Ventures and Other Investments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		$ 57,678
Weighted Average | Market yields
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.0719	0.0762
Residuals in Securitizations, at FV, measurement input	0.0758
Servicing assets, measurement input	0.1125	0.1200
Weighted Average | Market yields | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.0740	0.0840
Weighted Average | Market yields | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.0655	0.0655
Weighted Average | Market yields | Unguaranteed Investments Non-Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.0700	0.0730
Weighted Average | Cumulative prepayment rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.5617	0.5978
Servicing assets, measurement input	0.2250	0.2250
Weighted Average | Cumulative prepayment rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2250	0.2250
Weighted Average | Cumulative prepayment rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.3372	0.3465
Weighted Average | Cumulative prepayment rate | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.2250	0.2250
Weighted Average | Average cumulative default rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.1117	0.0989
Servicing assets, measurement input	0.2100	0.2100
Weighted Average | Average cumulative default rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2100	0.2100
Weighted Average | Average cumulative default rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.1695	0.1890
Weighted Average | Average cumulative default rate | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.2100	0.2100
Weighted Average | Average cumulative default rate | Unguaranteed Investments Non-Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input		0.3000
Investments, measurement input	0.3000
Weighted Average | Cost
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residuals in Securitizations, at FV, measurement input	0.1400
Weighted Average | Cost | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.1400	0.1100
Weighted Average | Weighted average cost of capital
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residuals in Securitizations, at FV, measurement input	0.0900
Weighted Average | Weighted average cost of capital | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.0900	0.0772
Weighted Average | Present value factor
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset held for sale, measurement input		0.9070
Weighted Average | Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset held for sale, measurement input		0.1023
Weighted Average | Discount rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.1125	0.1200
Weighted Average | Discount rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.1127	0.1297
Weighted Average | Expected volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.4500	0.4800
Weighted Average | Dividend yield
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.0670	0.0600
Weighted Average | Risk free rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.0395	0.0452
Minimum | Market yields
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.0643	0.0708
Residuals in Securitizations, at FV, measurement input	0.0758
Servicing assets, measurement input	0.1125	0.1200
Minimum | Market yields | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.0671	0.0800
Minimum | Market yields | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.0655	0.0655
Minimum | Market yields | Unguaranteed Investments Non-Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.0700	0.0730
Minimum | Cumulative prepayment rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.5000	0.5000
Servicing assets, measurement input	0.2250	0.2250
Minimum | Cumulative prepayment rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2250	0.2250
Minimum | Cumulative prepayment rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2250	0.2250
Minimum | Cumulative prepayment rate | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.2250	0.2250
Minimum | Average cumulative default rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.0500	0.0500
Servicing assets, measurement input	0.2100	0.2100
Minimum | Average cumulative default rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2100	0.2100
Minimum | Average cumulative default rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.0500	0.0500
Minimum | Average cumulative default rate | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.2100	0.2100
Minimum | Average cumulative default rate | Unguaranteed Investments Non-Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input		0.3000
Investments, measurement input	0.3000
Minimum | Cost
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residuals in Securitizations, at FV, measurement input	0.1200
Minimum | Cost | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.1200	0.0800
Minimum | Weighted average cost of capital
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residuals in Securitizations, at FV, measurement input	0.0700
Minimum | Weighted average cost of capital | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.0700	0.0600
Minimum | Present value factor
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset held for sale, measurement input		0.8950
Minimum | Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset held for sale, measurement input		0.0727
Minimum | Discount rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.1125	0.1200
Minimum | Discount rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.1075	0.1200
Minimum | Expected volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.4500	0.4800
Minimum | Dividend yield
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.0670	0.0600
Minimum | Risk free rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.0395	0.0452
Maximum | Market yields
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.0813	0.0818
Residuals in Securitizations, at FV, measurement input	0.0758
Servicing assets, measurement input	0.1125	0.1200
Maximum | Market yields | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.1249	0.1200
Maximum | Market yields | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.0655	0.0655
Maximum | Market yields | Unguaranteed Investments Non-Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.0700	0.0730
Maximum | Cumulative prepayment rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.6000	0.7000
Servicing assets, measurement input	0.2250	0.2250
Maximum | Cumulative prepayment rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2250	0.2250
Maximum | Cumulative prepayment rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.5000	0.7500
Maximum | Cumulative prepayment rate | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.2250	0.2250
Maximum | Average cumulative default rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held for sale, measurement input	0.1500	0.1500
Servicing assets, measurement input	0.2100	0.2100
Maximum | Average cumulative default rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2100	0.2100
Maximum | Average cumulative default rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.2100	0.2000
Maximum | Average cumulative default rate | Unguaranteed Investments Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input	0.2100	0.2100
Maximum | Average cumulative default rate | Unguaranteed Investments Non-Accrual
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, measurement input		0.3000
Investments, measurement input	0.3000
Maximum | Cost
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residuals in Securitizations, at FV, measurement input	0.1600
Maximum | Cost | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.1600	0.1400
Maximum | Weighted average cost of capital
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residuals in Securitizations, at FV, measurement input	0.1100
Maximum | Weighted average cost of capital | Joint Ventures and Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, measurement input	0.1100	0.2398
Maximum | Present value factor
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset held for sale, measurement input		0.9320
Maximum | Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset held for sale, measurement input		0.1171
Maximum | Discount rate | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.1125	0.1200
Maximum | Discount rate | Lower of Cost or Market
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets, measurement input	0.1200	0.1350
Maximum | Expected volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.4500	0.4800
Maximum | Dividend yield
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.0670	0.0600
Maximum | Risk free rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants, measurement input	0.0395	0.0452