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Loans - Summary of Risk Category by Loan Type (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	$ 11,583,109	$ 11,220,355
Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	10,786,799	10,575,150
Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	362,997	347,196
Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	344,971	189,883
Internal Investment Grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	11,494,767	11,112,229
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	4,901,021	4,655,779
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	4,580,999	4,432,837
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	160,356	151,381
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	159,666	71,561
Commercial real estate-investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,806,072	2,589,789
Commercial real estate-investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,611,440	2,444,238
Commercial real estate-investor owned | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	107,260	105,934
Commercial real estate-investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	87,372	39,617
Commercial real estate-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,329,613	2,340,474
Commercial real estate-owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,186,437	2,223,964
Commercial real estate-owner occupied | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	71,916	62,140
Commercial real estate-owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	71,260	54,370
Construction real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	858,146	891,059
Construction real estate | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	846,073	877,052
Construction real estate | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	10,676	11,849
Construction real estate | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	1,397	2,158
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	364,415	358,616
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	333,406	332,318
Residential | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	6,764	4,126
Residential | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	24,245	22,172
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	235,500	276,512
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	228,444	264,741
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	6,025	11,766
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	1,031	5
Total loans classified by performing status
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	$ 88,342	$ 108,126

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