Loans - Summary of Performing and Non Performing Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 11,550,716	$ 11,660,316
Loans, before unearned loan fees	11,692,780	11,800,338
Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	10,864,226	11,066,119
Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	400,329	335,627
Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	345,806	328,941
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	11,692,780	11,800,338
Loans, before unearned loan fees	11,693,751	11,801,093
Non-Covered Loans \| Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,960,830	2,986,906
Loans, before unearned loan fees	2,960,830	2,986,906
Non-Covered Loans \| Commercial - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,487,565	2,460,761
Loans, before unearned loan fees	2,487,565	2,460,761
Non-Covered Loans \| Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	669,921	689,357
Loans, before unearned loan fees	669,921	689,357
Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	82,419	69,651
Total \| Non-Covered Loans \| Commercial - investor owned \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	16,110	16,323
Total \| Non-Covered Loans \| Commercial - owner occupied \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	25,814	26,121
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	82,217	69,324
Performing \| Non-Covered Loans \| Commercial - investor owned \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	16,110	16,323
Performing \| Non-Covered Loans \| Commercial - owner occupied \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	25,814	26,121
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	202	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	5,131,963	5,208,520
C&I \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,781,026	4,909,871
C&I \| Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	199,463	147,216
C&I \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	151,474	151,433
C&I \| Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	36,570	23,096
C&I \| Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	36,394	22,778
C&I \| Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	176	318
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	345,599	367,093
Residential \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	326,851	342,380
Residential \| Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,167	6,548
Residential \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	14,581	18,165
Residential \| Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	582	589
Residential \| Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	582	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	53,054	56,113
Consumer \| Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	53,032	56,101
Consumer \| Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0	0
Consumer \| Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	22	12
Consumer \| Total
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,343	3,522
Consumer \| Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,317	3,513
Consumer \| Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 26	$ 9