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FAIR VALUE MEASUREMENT - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Transfers between levels of fair value hierarchy $ 0 $ 0
Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Single family LHFI 1,280,000 5,868,000
Single family LHFS 12,849,000 14,075,000
Fair Value, Recurring | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Single family LHFI 1,280,000 5,868,000
Single family LHFS $ 0 $ 0