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Loans - Credit Quality Based on Aging Status (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | $ 11,082,405 | $ 10,749,347
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 11,220,355 | 10,884,118
Non-Covered Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 11,220,355 | 10,884,118
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 11,220,818 | 10,888,345
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,607,755 | 2,452,402
Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,359,956 | 2,344,117
Non-Covered Loans | Construction and land development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 892,563 | 760,122
Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,655,779 | 4,646,371
Commercial and Industrial Portfolio Segment [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,432,837 | 4,475,490
Commercial and Industrial Portfolio Segment [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 151,381 | 89,066
Commercial and Industrial Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 71,561 | 81,815
Residential Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 358,616 | 371,476
Residential Portfolio Segment [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 332,318 | 358,299
Residential Portfolio Segment [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,126 | 2,812
Residential Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 22,172 | 10,365
Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 276,512 | 270,964
Other | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 264,741 | 244,839
Other | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 11,766 | 26,117
Other | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 5 | 8
Performing Financial Instruments [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 108,106 | 77,452
Performing Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 17,175 | 17,885
Performing Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 27,349 | 28,373
Performing Financial Instruments [Member] | Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 60,899 | 26,076
Performing Financial Instruments [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 647 | 712
Performing Financial Instruments [Member] | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 2,036 | 4,406
Nonperforming Financial Instruments [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 20 | 117
Nonperforming Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Nonperforming Financial Instruments [Member] | Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 0
Nonperforming Financial Instruments [Member] | Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 11 | 112
Nonperforming Financial Instruments [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 0 | 0
Nonperforming Financial Instruments [Member] | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 9 | 5
Performing And Nonperforming Financial Instruments |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 108,126 | 77,569
Performing And Nonperforming Financial Instruments | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 17,175 | 17,885
Performing And Nonperforming Financial Instruments | Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 27,349 | 28,373
Performing And Nonperforming Financial Instruments | Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 60,910 | 26,188
Performing And Nonperforming Financial Instruments | Residential Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 647 | 712
Performing And Nonperforming Financial Instruments | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | $ 2,045 | $ 4,411

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