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Loans and Allowance for Credit Losses - Loan Portfolio by Categories (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | $ 17,001,760 | $ 16,845,670
Consumer |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 307,273 | 318,666
Consumer | Credit cards |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 182,742 | 191,204
Consumer | Other consumer |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 124,531 | 127,462
Real Estate |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 13,464,526 | 13,338,186
Real Estate | Construction and development |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 3,331,739 | 3,144,220
Real Estate | Single family residential |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 2,624,738 | 2,641,556
Real Estate | Other commercial |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 7,508,049 | 7,552,410
Commercial |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 2,725,953 | 2,722,886
Commercial | Commercial |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 2,499,311 | 2,490,176
Commercial | Agricultural |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | 226,642 | 232,710
Other |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans | $ 504,008 | $ 465,932

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