Loans - Summary of Performing and Non Performing Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 10,860,543	$ 10,749,347
Loans, before unearned loan fees	11,000,007	10,884,118
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	11,000,007	10,884,118
Loans, before unearned loan fees	11,002,393	10,888,345
Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,468,895	2,452,402
Loans, before unearned loan fees	2,468,895	2,452,402
Non-Covered Loans | Commercial - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,380,957	2,344,117
Loans, before unearned loan fees	2,380,957	2,344,117
Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	893,776	760,122
Loans, before unearned loan fees	893,776	760,122
Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	76,281	77,569
Total | Non-Covered Loans | Commercial - investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	17,530	17,885
Total | Non-Covered Loans | Commercial - owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	27,861	28,373
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	76,234	77,452
Performing | Non-Covered Loans | Commercial - investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	17,530	17,885
Performing | Non-Covered Loans | Commercial - owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	27,861	28,373
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	47	117
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	4,592,744	4,646,371
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,353,083	4,475,490
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	157,830	89,066
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	81,831	81,815
Commercial and industrial | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	26,704	26,188
Commercial and industrial | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	26,665	26,076
Commercial and industrial | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	39	112
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	351,273	371,476
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	344,739	358,299
Residential | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,458	2,812
Residential | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	2,076	10,365
Residential | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	661	712
Residential | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	661	712
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	274,677	270,964
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	249,602	244,839
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	25,069	26,117
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	6	8
Other | Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,525	4,411
Other | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,517	4,406
Other | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 8	$ 5