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FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES - Schedule of Financial Instruments Carried at Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | $ 3,737,119 | $ 3,846,537
Collateralized mortgage obligation (CMO) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 455,483 | 464,619
Fannie Mae (FNMA) mortgage-backed securities (MBS) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 2,939,887 | 3,042,350
Freddie Mac (FHLMC) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 111,807 | 115,532
Ginnie Mae (GNMA) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 43,823 | 43,340
Government-sponsored enterprises (GSE) agency notes |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 186,119 | 180,696
Fair Value, Measurements, Recurring |  |
Assets measured at fair value on a recurring basis: |  |
Other assets, fair value | 166,395 | 153,647
Liabilities measured at fair value on a recurring basis: |  |
Other liabilities | 141,305 | 151,642
Assets measured at fair value on a nonrecurring basis: |  |
Total assets measured at fair value | 3,903,514 | 4,000,184
Fair Value, Measurements, Recurring | Collateralized mortgage obligation (CMO) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 455,483 | 464,619
Fair Value, Measurements, Recurring | Fannie Mae (FNMA) mortgage-backed securities (MBS) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 2,939,887 | 3,042,350
Fair Value, Measurements, Recurring | Freddie Mac (FHLMC) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 111,807 | 115,532
Fair Value, Measurements, Recurring | Ginnie Mae (GNMA) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 43,823 | 43,340
Fair Value, Measurements, Recurring | Government-sponsored enterprises (GSE) agency notes |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 186,119 | 180,696
Fair Value, Measurements, Nonrecurring |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other real estate owned | 1,301 | 1,569
Total assets measured at fair value | 57,744 | 46,043
Fair Value, Measurements, Nonrecurring | Other investments |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other investments | 14,322 | 15,206
Fair Value, Measurements, Nonrecurring | Loans held for sale |  |
Assets measured at fair value on a nonrecurring basis: |  |
Loans held for sale | 42,121 | 29,268
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Recurring |  |
Assets measured at fair value on a recurring basis: |  |
Other assets, fair value | 0 | 0
Liabilities measured at fair value on a recurring basis: |  |
Other liabilities | 0 | 0
Assets measured at fair value on a nonrecurring basis: |  |
Total assets measured at fair value | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Recurring | Collateralized mortgage obligation (CMO) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Recurring | Fannie Mae (FNMA) mortgage-backed securities (MBS) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Recurring | Freddie Mac (FHLMC) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Recurring | Ginnie Mae (GNMA) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Recurring | Government-sponsored enterprises (GSE) agency notes |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Nonrecurring |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other real estate owned | 0 | 0
Total assets measured at fair value | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Nonrecurring | Other investments |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other investments | 0 | 0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Nonrecurring | Loans held for sale |  |
Assets measured at fair value on a nonrecurring basis: |  |
Loans held for sale | 0 | 0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring |  |
Assets measured at fair value on a recurring basis: |  |
Other assets, fair value | 166,339 | 153,569
Liabilities measured at fair value on a recurring basis: |  |
Other liabilities | 133,020 | 137,616
Assets measured at fair value on a nonrecurring basis: |  |
Total assets measured at fair value | 3,903,458 | 4,000,106
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Collateralized mortgage obligation (CMO) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 455,483 | 464,619
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Fannie Mae (FNMA) mortgage-backed securities (MBS) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 2,939,887 | 3,042,350
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Freddie Mac (FHLMC) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 111,807 | 115,532
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Ginnie Mae (GNMA) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 43,823 | 43,340
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Government-sponsored enterprises (GSE) agency notes |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 186,119 | 180,696
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other real estate owned | 0 | 0
Total assets measured at fair value | 42,121 | 29,268
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring | Other investments |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other investments | 0 | 0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring | Loans held for sale |  |
Assets measured at fair value on a nonrecurring basis: |  |
Loans held for sale | 42,121 | 29,268
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring |  |
Assets measured at fair value on a recurring basis: |  |
Other assets, fair value | 56 | 78
Liabilities measured at fair value on a recurring basis: |  |
Other liabilities | 8,285 | 14,026
Assets measured at fair value on a nonrecurring basis: |  |
Total assets measured at fair value | 56 | 78
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Collateralized mortgage obligation (CMO) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Fannie Mae (FNMA) mortgage-backed securities (MBS) |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Freddie Mac (FHLMC) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Ginnie Mae (GNMA) MBS |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Government-sponsored enterprises (GSE) agency notes |  |
Assets measured at fair value on a recurring basis: |  |
Investment securities available-for-sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other real estate owned | 1,301 | 1,569
Total assets measured at fair value | 15,623 | 16,775
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Other investments |  |
Assets measured at fair value on a nonrecurring basis: |  |
Other investments | 14,322 | 15,206
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Loans held for sale |  |
Assets measured at fair value on a nonrecurring basis: |  |
Loans held for sale | $ 0 | $ 0

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