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FAIR VALUE MEASUREMENT - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers between levels of fair value hierarchy	$ 0	$ 0	$ 0	$ 0
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Single family LHFI	1,329,000		1,329,000		$ 1,280,000
Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Single family LHFI	$ 1,329,000		$ 1,329,000		$ 1,280,000

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- Definition

Fair value measurement transfers between with levels of hierarchy for assets and liabilities held.

+ References

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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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.

+ References

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