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Loans - Summary of Performing and Non Performing Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 11,263,707	$ 11,082,405
Loans, before unearned loan fees	11,408,840	11,220,355
Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	10,697,350	10,575,150
Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	357,955	347,196
Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	272,941	189,883
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	11,408,840	11,220,355
Loans, before unearned loan fees	11,410,648	11,220,818
Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,741,593	2,607,755
Loans, before unearned loan fees	2,741,593	2,607,755
Non-Covered Loans | Commercial - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,326,431	2,359,956
Loans, before unearned loan fees	2,326,431	2,359,956
Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	846,143	892,563
Loans, before unearned loan fees	846,143	892,563
Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	80,594	108,126
Total | Non-Covered Loans | Commercial - investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	16,749	17,175
Total | Non-Covered Loans | Commercial - owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	26,735	27,349
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	80,438	108,106
Performing | Non-Covered Loans | Commercial - investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	16,749	17,175
Performing | Non-Covered Loans | Commercial - owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	26,735	27,349
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	156	20
Non Performing | Non-Covered Loans | Commercial - investor owned | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0	0
Non Performing | Non-Covered Loans | Commercial - owner occupied | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0	0
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,835,757	4,655,779
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,532,172	4,432,837
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	198,973	151,381
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	104,612	71,561
Commercial and industrial | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	34,511	60,910
Commercial and industrial | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	34,385	60,899
Commercial and industrial | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	126	11
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	363,679	358,616
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	335,347	332,318
Residential | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	5,551	4,126
Residential | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	22,781	22,172
Residential | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	602
Residential | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	602
Residential | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	0
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	253,697	276,512
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	247,292	264,741
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	5,302	11,766
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	1,103	5
Other | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	1,997	2,045
Other | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	1,967	2,036
Other | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 30	9
Residential Real Estate | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity		647
Residential Real Estate | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity		647
Residential Real Estate | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity		$ 0

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