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Loans and Allowance for Credit Losses - Loan Portfolio by Categories (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | $ 16,142,124 | $ 12,012,503
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 349,810 | 355,370
Consumer | Credit cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 196,928 | 187,052
Consumer | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 152,882 | 168,318
Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 12,581,262 | 9,167,250
Real Estate | Construction and development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 2,566,649 | 1,326,371
Real Estate | Single family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 2,546,115 | 2,101,975
Real Estate | Other commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 7,468,498 | 5,738,904
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 2,837,913 | 2,160,760
Commercial | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 2,632,290 | 1,992,043
Commercial | Agricultural |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 205,623 | 168,717
Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | $ 373,139 | $ 329,123

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