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FAIR VALUE MEASUREMENT - Schedule of Fair Value Hierarchy Measurement (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets: |  |
Single family mortgage servicing rights | $ 76,617,000 |
Fair Value, Recurring |  |
Assets: |  |
Single family LHFS | 14,075,000 | $ 128,041,000
Single family LHFI | 5,868,000 | 7,287,000
Single family mortgage servicing rights | 76,617,000 | 61,584,000
Total assets | 1,508,094,000 | 1,207,359,000
Liabilities: |  |
Total liabilities | 13,280,000 | 5,184,000
Fair Value, Recurring | Level 1 |  |
Assets: |  |
Single family LHFS | 0 | 0
Single family LHFI | 0 | 0
Single family mortgage servicing rights | 0 | 0
Total assets | 19,233,000 | 334,000
Liabilities: |  |
Total liabilities | 0 | 0
Fair Value, Recurring | Level 2 |  |
Assets: |  |
Single family LHFS | 14,075,000 | 128,041,000
Single family LHFI | 0 | 0
Single family mortgage servicing rights | 0 | 0
Total assets | 1,404,226,000 | 1,133,185,000
Liabilities: |  |
Total liabilities | 13,244,000 | 5,181,000
Fair Value, Recurring | Level 3 |  |
Assets: |  |
Investment securities AFS | 2,009,000 | 2,482,000
Single family LHFS | 0 | 0
Single family LHFI | 5,868,000 | 7,287,000
Single family mortgage servicing rights | 76,617,000 | 61,584,000
Total assets | 84,635,000 | 73,840,000
Liabilities: |  |
Total liabilities | 36,000 | 3,000
Fair Value, Recurring | U.S. Treasury securities |  |
Assets: |  |
Trading securities - U.S. Treasury securities | 18,997,000 |
Fair Value, Recurring | U.S. Treasury securities | Level 1 |  |
Assets: |  |
Trading securities - U.S. Treasury securities | 18,997,000 |
Fair Value, Recurring | U.S. Treasury securities | Level 2 |  |
Assets: |  |
Trading securities - U.S. Treasury securities | 0 |
Fair Value, Recurring | U.S. Treasury securities | Level 3 |  |
Assets: |  |
Trading securities - U.S. Treasury securities | 0 |
Fair Value, Recurring | Residential Mortgage Backed Securities |  |
Assets: |  |
Investment securities AFS | 197,262,000 | 32,963,000
Fair Value, Recurring | Residential Mortgage Backed Securities | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Residential Mortgage Backed Securities | Level 2 |  |
Assets: |  |
Investment securities AFS | 195,321,000 | 30,556,000
Fair Value, Recurring | Residential Mortgage Backed Securities | Level 3 |  |
Assets: |  |
Investment securities AFS | 1,941,000 | 2,407,000
Fair Value, Recurring | Commercial Mortgage Backed Securities |  |
Assets: |  |
Investment securities AFS | 56,049,000 | 62,792,000
Fair Value, Recurring | Commercial Mortgage Backed Securities | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Commercial Mortgage Backed Securities | Level 2 |  |
Assets: |  |
Investment securities AFS | 56,049,000 | 62,792,000
Fair Value, Recurring | Commercial Mortgage Backed Securities | Level 3 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Residential Collateralized Mortgage Obligations |  |
Assets: |  |
Investment securities AFS | 553,039,000 | 187,394,000
Fair Value, Recurring | Residential Collateralized Mortgage Obligations | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Residential Collateralized Mortgage Obligations | Level 2 |  |
Assets: |  |
Investment securities AFS | 553,039,000 | 187,394,000
Fair Value, Recurring | Residential Collateralized Mortgage Obligations | Level 3 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Commercial Collateralized Mortgage Obligations |  |
Assets: |  |
Investment securities AFS | 70,519,000 | 136,659,000
Fair Value, Recurring | Commercial Collateralized Mortgage Obligations | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Commercial Collateralized Mortgage Obligations | Level 2 |  |
Assets: |  |
Investment securities AFS | 70,519,000 | 136,659,000
Fair Value, Recurring | Commercial Collateralized Mortgage Obligations | Level 3 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Municipal bonds |  |
Assets: |  |
Investment securities AFS | 411,548,000 | 539,923,000
Fair Value, Recurring | Municipal bonds | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Municipal bonds | Level 2 |  |
Assets: |  |
Investment securities AFS | 411,548,000 | 539,923,000
Fair Value, Recurring | Municipal bonds | Level 3 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Corporate debt securities |  |
Assets: |  |
Investment securities AFS | 42,945,000 | 19,616,000
Fair Value, Recurring | Corporate debt securities | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Corporate debt securities | Level 2 |  |
Assets: |  |
Investment securities AFS | 42,877,000 | 19,541,000
Fair Value, Recurring | Corporate debt securities | Level 3 |  |
Assets: |  |
Investment securities AFS | 68,000 | 75,000
Fair Value, Recurring | U.S. Treasury securities |  |
Assets: |  |
Investment securities AFS | 19,934,000 | 23,175,000
Fair Value, Recurring | U.S. Treasury securities | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | U.S. Treasury securities | Level 2 |  |
Assets: |  |
Investment securities AFS | 19,934,000 | 23,175,000
Fair Value, Recurring | U.S. Treasury securities | Level 3 |  |
Assets: |  |
Investment securities AFS | 0 | 0
Fair Value, Recurring | Agency debentures |  |
Assets: |  |
Investment securities AFS | 27,478,000 |
Fair Value, Recurring | Agency debentures | Level 1 |  |
Assets: |  |
Investment securities AFS | 0 |
Fair Value, Recurring | Agency debentures | Level 2 |  |
Assets: |  |
Investment securities AFS | 27,478,000 |
Fair Value, Recurring | Agency debentures | Level 3 |  |
Assets: |  |
Investment securities AFS | 0 |
Fair Value, Recurring | Futures |  |
Assets: |  |
Derivative assets | 18,000 | 334,000
Fair Value, Recurring | Futures | Level 1 |  |
Assets: |  |
Derivative assets | 18,000 | 334,000
Fair Value, Recurring | Futures | Level 2 |  |
Assets: |  |
Derivative assets | 0 | 0
Fair Value, Recurring | Futures | Level 3 |  |
Assets: |  |
Derivative assets | 0 | 0
Fair Value, Recurring | Options |  |
Assets: |  |
Derivative assets | 218,000 |
Fair Value, Recurring | Options | Level 1 |  |
Assets: |  |
Derivative assets | 218,000 |
Fair Value, Recurring | Options | Level 2 |  |
Assets: |  |
Derivative assets | 0 |
Fair Value, Recurring | Options | Level 3 |  |
Assets: |  |
Derivative assets |  |
Fair Value, Recurring | Forward sale commitments |  |
Assets: |  |
Derivative assets | 293,000 | 723,000
Liabilities: |  |
Derivative liabilities | 151,000 | 640,000
Fair Value, Recurring | Forward sale commitments | Level 1 |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Fair Value, Recurring | Forward sale commitments | Level 2 |  |
Assets: |  |
Derivative assets | 293,000 | 723,000
Liabilities: |  |
Derivative liabilities | 151,000 | 640,000
Fair Value, Recurring | Forward sale commitments | Level 3 |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Fair Value, Recurring | Interest rate lock commitments |  |
Assets: |  |
Derivative assets | 141,000 | 2,487,000
Liabilities: |  |
Derivative liabilities | 36,000 | 3,000
Fair Value, Recurring | Interest rate lock commitments | Level 1 |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Fair Value, Recurring | Interest rate lock commitments | Level 2 |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Fair Value, Recurring | Interest rate lock commitments | Level 3 |  |
Assets: |  |
Derivative assets | 141,000 | 2,487,000
Liabilities: |  |
Derivative liabilities | 36,000 | 3,000
Fair Value, Recurring | Interest rate swaps |  |
Assets: |  |
Derivative assets | 13,093,000 | 4,381,000
Liabilities: |  |
Derivative liabilities | 13,093,000 | 4,541,000
Fair Value, Recurring | Interest rate swaps | Level 1 |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Fair Value, Recurring | Interest rate swaps | Level 2 |  |
Assets: |  |
Derivative assets | 13,093,000 | 4,381,000
Liabilities: |  |
Derivative liabilities | 13,093,000 | 4,541,000
Fair Value, Recurring | Interest rate swaps | Level 3 |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | $ 0 | $ 0

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