FAIR VALUE MEASUREMENT - Schedule of Level 3 Unobservable Inputs (Details) - Fair Value, Recurring $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Single family LHFI	$ 1,287	$ 1,280
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities AFS	1,698	1,860
Single family LHFI	1,287	1,280
Level 3 \| Single family
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Single family LHFI	$ 1,287	$ 1,280
Implied spread to benchmark interest rate curve \| Level 3 \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available for sale, measurement input	0.0225	0.0225
Implied spread to benchmark interest rate curve \| Level 3 \| Minimum \| Single family
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Single family LHFI, measurement input	0.0294	0.0330
Implied spread to benchmark interest rate curve \| Level 3 \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available for sale, measurement input	0.0225	0.0225
Implied spread to benchmark interest rate curve \| Level 3 \| Maximum \| Single family
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Single family LHFI, measurement input	0.0556	0.0504
Implied spread to benchmark interest rate curve \| Level 3 \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available for sale, measurement input	0.0225	0.0225
Implied spread to benchmark interest rate curve \| Level 3 \| Weighted Average \| Single family
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Single family LHFI, measurement input	0.0369	0.0394
Interest rate lock commitments \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments, net	$ 126	$ 411
Interest rate lock commitments \| Fall-out factor \| Level 3 \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments, net, measurement input	0.0083	0.0081
Interest rate lock commitments \| Fall-out factor \| Level 3 \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments, net, measurement input	0.2913	0.4164
Interest rate lock commitments \| Fall-out factor \| Level 3 \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments, net, measurement input	0.0928	0.1054
Interest rate lock commitments \| Value of servicing \| Level 3 \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments, net, measurement input	0.0078	0.0032
Interest rate lock commitments \| Value of servicing \| Level 3 \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments, net, measurement input	0.0215	0.0080
Interest rate lock commitments \| Value of servicing \| Level 3 \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments, net, measurement input	0.0137	0.0057

Loans Held-for-Investment, Measurement Input

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- Definition

Amount 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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- Definition

Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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- Definition

Value of input used to measure derivative asset.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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