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Loans - Credit Quality Based on Aging Status (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | $ 11,660,316 | $ 11,082,405
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 11,800,338 | 11,220,355
Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 11,066,119 | 10,575,150
Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 335,627 | 347,196
Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 328,941 | 189,883
Non-Covered Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 11,800,338 | 11,220,355
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 11,801,093 | 11,220,818
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 | 2,986,906 | 2,607,755
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 | 2,460,761 | 2,359,956
Non-Covered Loans | Construction and land development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 689,357 | 892,563
Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 5,208,520 | 4,655,779
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 | 4,909,871 | 4,432,837
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 | 147,216 | 151,381
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 | 151,433 | 71,561
Residential Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 367,093 | 358,616
Residential Portfolio Segment [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 342,380 | 332,318
Residential Portfolio Segment [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 6,548 | 4,126
Residential Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 18,165 | 22,172
Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 56,113 | 276,512
Consumer | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 56,101 | 264,741
Consumer | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 0 | 11,766
Consumer | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 12 | 5
Performing Financial Instruments [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 69,324 | 108,106
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 | 16,323 | 17,175
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 | 26,121 | 27,349
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 | 22,778 | 60,899
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 | 589 | 647
Performing Financial Instruments [Member] | Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 3,513 | 2,036
Nonperforming Financial Instruments [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 327 | 20
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 | 318 | 11
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] | Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 9 | 9
Performing And Nonperforming Financial Instruments |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | 69,651 | 108,126
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 | 16,323 | 17,175
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 | 26,121 | 27,349
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 | 23,096 | 60,910
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 | 589 | 647
Performing And Nonperforming Financial Instruments | Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss | $ 3,522 | $ 2,045

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