Loans - Summary of Risk Category by Loan Type (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	$ 11,298,763	$ 11,220,355
Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	10,561,938	10,575,150
Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	358,607	347,196
Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	261,189	189,883
Internal Investment Grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	11,181,734	11,112,229
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	4,659,249	4,655,779
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	4,374,042	4,432,837
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	190,504	151,381
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	94,703	71,561
Commercial real estate-investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,657,029	2,589,789
Commercial real estate-investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,503,391	2,444,238
Commercial real estate-investor owned | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	69,114	105,934
Commercial real estate-investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	84,524	39,617
Commercial real estate-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,345,260	2,340,474
Commercial real estate-owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,221,174	2,223,964
Commercial real estate-owner occupied | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	66,539	62,140
Commercial real estate-owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	57,547	54,370
Construction real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	880,708	891,059
Construction real estate | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	868,022	877,052
Construction real estate | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	11,343	11,849
Construction real estate | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	1,343	2,158
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	365,714	358,616
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	338,704	332,318
Residential | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	4,995	4,126
Residential | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	22,015	22,172
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	273,774	276,512
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	256,605	264,741
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	16,112	11,766
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	1,057	5
Total loans classified by performing status
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	$ 117,029	$ 108,126