Loans - Summary of Performing and Non Performing Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 11,155,819	$ 11,082,405
Loans, before unearned loan fees	11,298,763	11,220,355
Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	10,561,938	10,575,150
Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	358,607	347,196
Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	261,189	189,883
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	11,298,763	11,220,355
Loans, before unearned loan fees	11,299,246	11,220,818
Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,675,424	2,607,755
Loans, before unearned loan fees	2,675,424	2,607,755
Non-Covered Loans | Commercial - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,364,214	2,359,956
Loans, before unearned loan fees	2,364,214	2,359,956
Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	882,313	892,563
Loans, before unearned loan fees	882,313	892,563
Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	117,029	108,126
Total | Non-Covered Loans | Commercial - investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	16,962	17,175
Total | Non-Covered Loans | Commercial - owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	27,042	27,349
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	116,839	108,106
Performing | Non-Covered Loans | Commercial - investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	16,962	17,175
Performing | Non-Covered Loans | Commercial - owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	27,042	27,349
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	190	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	4,659,249	4,655,779
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,374,042	4,432,837
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	190,504	151,381
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	94,703	71,561
Commercial and industrial | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	70,458	60,910
Commercial and industrial | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	70,314	60,899
Commercial and industrial | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	144	11
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	365,714	358,616
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	338,704	332,318
Residential | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,995	4,126
Residential | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	22,015	22,172
Residential | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	639	647
Residential | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	639	647
Residential | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	0	0
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	273,774	276,512
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	256,605	264,741
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	16,112	11,766
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	1,057	5
Other | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	1,928	2,045
Other | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	1,882	2,036
Other | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 46	$ 9