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FAIR VALUE MEASUREMENT - Schedule of Level 3 Unobservable Inputs (Details) - Fair Value, Recurring $ in Thousands | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Single family LHFI | $ 5,868 | $ 7,287
Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities AFS | 2,009 | 2,482
Single family LHFI | 5,868 | 7,287
Level 3 | Single Family |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Single family LHFI | $ 5,868 | $ 7,287
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 | 0.0200 | 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 | 0.0287 | 0.0239
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 | 0.0200 | 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 | 0.0515 | 0.0796
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 | 0.0200 | 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 | 0.0414 | 0.0356
Interest rate lock commitments | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Interest rate lock commitments, net | $ 105 | $ 2,484
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 | 0.0010 | 0.0015
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 | 0.1750 | 0.2193
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 | 0.0643 | 0.0844
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 | 0.0054 | 0.0035
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 | 0.0111 | 0.0146
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 | 0.0095 | 0.0115

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 + Details
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