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Loans and Allowance for Credit Losses - Nonperforming Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | $ 21,146,033 | $ 20,352,559
Other real estate owned |  | $ 5,757 | $ 1,708
Nonperforming assets to total loans and other real estate |  | 0.40% | 0.34%
Nonperforming assets to total loans, excluding Warehouse Purchase Program loans, and other real estate |  | 0.43% | 0.36%
Nonaccrual loans to total loans |  | 0.38% | 0.32%
Nonaccrual loans to total loans, excluding Warehouse Purchase Program loans |  | 0.40% | 0.34%
Nonperforming Financial Loans [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | $ 83,989 | $ 70,883
Repossessed assets |  | 177 | 76
Other real estate owned |  | 5,757 | 1,708
Total nonperforming assets |  | 89,923 | 72,667
Nonperforming Financial Loans [Member] | Finance Receivable Nonaccrual Status [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment | [1],[2] | 83,969 | 68,688
Nonperforming Financial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Loans held for investment |  | $ 20 | $ 2,195
[1] | ASU 2022-02 became effective for the Company on January 1, 2023.
[2] | There were no nonperforming Warehouse Purchase Program loans or Warehouse Purchase Program lines of credit for the periods presented.

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