Loans - Summary of Performing and Non Performing Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 12,200,186	$ 11,660,316
Loans, before unearned loan fees	12,344,705	11,800,338
Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	11,466,085	11,066,119
Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	459,839	335,627
Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	320,443	328,941
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	12,344,705	11,800,338
Loans, before unearned loan fees	12,347,329	11,801,093
Non-Covered Loans \| Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,237,616	2,986,906
Loans, before unearned loan fees	3,237,616	2,986,906
Non-Covered Loans \| Commercial - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,482,819	2,460,761
Loans, before unearned loan fees	2,482,819	2,460,761
Non-Covered Loans \| Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	747,202	689,357
Loans, before unearned loan fees	747,202	689,357
Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	98,338	69,651
Total \| Non-Covered Loans \| Commercial - investor owned \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	15,684	16,323
Total \| Non-Covered Loans \| Commercial - owner occupied \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	25,200	26,121
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	98,241	69,324
Performing \| Non-Covered Loans \| Commercial - investor owned \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	15,684	16,323
Performing \| Non-Covered Loans \| Commercial - owner occupied \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	25,200	26,121
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	97	327
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
C&I
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	5,413,896	5,208,520
C&I \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	5,078,233	4,909,871
C&I \| Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	181,106	147,216
C&I \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	154,557	151,433
C&I \| Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	53,538	23,096
C&I \| Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	53,450	22,778
C&I \| Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	88	318
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	356,628	367,093
Residential \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	344,206	342,380
Residential \| Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,295	6,548
Residential \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	8,127	18,165
Residential \| Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	556	589
Residential \| Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	556	589
Residential \| Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	0	0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	46,821	56,113
Consumer \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	46,282	56,101
Consumer \| Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	524	0
Consumer \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	15	12
Consumer \| Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,360	3,522
Consumer \| Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,351	3,513
Consumer \| Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 9	$ 9