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Loans - Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | $ 11,220,355 | $ 10,884,118
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss, Total | 11,082,405 | 10,749,347
Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 11,220,818 | 10,888,345
Loans, before unearned loan fees | 11,220,818 | 10,888,345
Unearned loan fees, net | (463) | (4,227)
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss, Total | 11,220,355 | 10,884,118
Non-Covered Loans | Financial Asset, 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 16,835 | 16,231
Non-Covered Loans | Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 51,039 | 44,445
Non-Covered Loans | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 67,874 | 60,676
Non-Covered Loans | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 11,152,944 | 10,827,669
Non-Covered Loans | Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,720,428 | 4,674,056
Non-Covered Loans | Commercial and Industrial Portfolio Segment [Member] | Financial Asset, 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,948 | 3,445
Non-Covered Loans | Commercial and Industrial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 12,228 | 9,037
Non-Covered Loans | Commercial and Industrial Portfolio Segment [Member] | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 14,176 | 12,482
Non-Covered Loans | Commercial and Industrial Portfolio Segment [Member] | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 4,706,252 | 4,661,574
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,607,755 | 2,452,402
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Financial Asset, 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 1,377 | 1,905
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 14,333 | 18,395
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 15,710 | 20,300
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,592,045 | 2,432,102
Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,359,956 | 2,344,117
Non-Covered Loans | CRE - owner occupied | Financial Asset, 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 10,542 | 8,409
Non-Covered Loans | CRE - owner occupied | Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 18,591 | 14,142
Non-Covered Loans | CRE - owner occupied | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 29,133 | 22,551
Non-Covered Loans | CRE - owner occupied | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,330,823 | 2,321,566
Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 892,563 | 760,122
Non-Covered Loans | Construction and land development | Financial Asset, 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 101 | 770
Non-Covered Loans | Construction and land development | Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 5,620 | 1,908
Non-Covered Loans | Construction and land development | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 5,721 | 2,678
Non-Covered Loans | Construction and land development | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 886,842 | 757,444
Non-Covered Loans | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 358,923 | 371,995
Non-Covered Loans | Residential real estate | Financial Asset, 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 2,833 | 1,620
Non-Covered Loans | Residential real estate | Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 258 | 959
Non-Covered Loans | Residential real estate | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 3,091 | 2,579
Non-Covered Loans | Residential real estate | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 355,832 | 369,416
Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 281,193 | 285,653
Non-Covered Loans | Other | Financial Asset, 30-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 34 | 82
Non-Covered Loans | Other | Financial Asset, Equal to or Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 9 | 4
Non-Covered Loans | Other | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 43 | 86
Non-Covered Loans | Other | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | $ 281,150 | $ 285,567

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- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 + Details
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