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FAIR VALUE MEASUREMENT - Schedule of Level 3 Unobservable Inputs (Details) - Fair Value, Recurring $ in Thousands | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Single family LHFI | $ 1,280 | $ 5,868
Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities AFS | 1,860 | 2,009
Single family LHFI | 1,280 | 5,868
Level 3 | Single family |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Single family LHFI | $ 1,280 | $ 5,868
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 | 0.0200
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 | 0.0330 | 0.0287
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 | 0.0200
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 | 0.0504 | 0.0515
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 | 0.0200
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 | 0.0394 | 0.0414
Interest rate lock commitments | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Interest rate lock commitments, net | $ 411 | $ 105
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 | 0.0081 | 0.0010
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 | 0.4164 | 0.1750
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 | 0.1054 | 0.0643
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 | 0.0032 | 0.0054
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 | 0.0080 | 0.0111
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 | 0.0057 | 0.0095

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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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