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LOANS HELD FOR INVESTMENT - Additional Information I (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Net deferred origination costs | $ 1,800 | $ 6,100
Unearned income | 130,400 | 132,600
Finance lease, unearned income | 126,000 | 128,000
Loans held for investment | 12,746,556 | 12,185,483
Asset Pledged as Collateral [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans held for investment | 5,400,000 | 4,600,000
Asset Pledged as Collateral [Member] | Time Deposits [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans held for investment | 123,000 | 121,100
Asset Pledged as Collateral [Member] | Uninsured Portion Of Government Deposits [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans held for investment | 163,500 | 166,900
Asset Pledged as Collateral [Member] | Federal Home Loan Bank Borrowings [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans held for investment | 1,700,000 | 1,800,000
Asset Pledged as Collateral [Member] | Federal Reserve Bank Advances [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans held for investment | 3,400,000 | 2,500,000
Residential Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans held for investment | 2,828,431 | 2,821,726
Servicing of loans | 3,700,000 | 3,800,000
Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Servicing of loans | $ 262,900 | $ 230,500

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