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Loans - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 11,220,355	$ 10,884,118
Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,220,818	10,888,345
Commercial and Industrial Portfolio Segment [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,720,428	4,674,056
Commercial Real Estate Investor Owned Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,607,755	2,452,402
Commercial Real Estate Owner Occupied Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,359,956	2,344,117
Construction and land development | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	892,563	760,122
Residential real estate | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	358,923	371,995
Other | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	281,193	285,653
Commercial Real Estate | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	21,657	26,426
Commercial Real Estate | Commercial and Industrial Portfolio Segment [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	527
Commercial Real Estate | Commercial Real Estate Investor Owned Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	14,136	19,467
Commercial Real Estate | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	7,521	5,904
Commercial Real Estate | Construction and land development | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		528
Commercial Real Estate | Residential real estate | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0
Residential | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	482	5,202
Residential | Commercial and Industrial Portfolio Segment [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	1,864
Residential | Commercial Real Estate Investor Owned Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Residential | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	482	1,638
Residential | Construction and land development | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		741
Residential | Residential real estate | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		959
Blanket Lien | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,765	2,175
Blanket Lien | Commercial and Industrial Portfolio Segment [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,279	344
Blanket Lien | Commercial Real Estate Investor Owned Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Blanket Lien | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	486	1,831
Blanket Lien | Construction and land development | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0
Blanket Lien | Residential real estate | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0
Other Collateral | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	3,495	3,445
Other Collateral | Commercial and Industrial Portfolio Segment [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	3,495	3,445
Other Collateral | Commercial Real Estate Investor Owned Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Other Collateral | Commercial Real Estate Owner Occupied Financing Receivable [Member] | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 0	0
Other Collateral | Construction and land development | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0
Other Collateral | Residential real estate | Non-Covered Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		$ 0

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- Definition

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