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Loans - Summary of Risk Category by Loan Type (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	$ 11,408,840	$ 11,220,355
Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	10,697,350	10,575,150
Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	357,955	347,196
Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	272,941	189,883
Internal Investment Grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	11,328,246	11,112,229
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	4,835,757	4,655,779
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	4,532,172	4,432,837
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	198,973	151,381
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	104,612	71,561
Commercial real estate-investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,723,166	2,589,789
Commercial real estate-investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,560,080	2,444,238
Commercial real estate-investor owned | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	78,653	105,934
Commercial real estate-investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	84,433	39,617
Commercial real estate-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,307,450	2,340,474
Commercial real estate-owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	2,180,476	2,223,964
Commercial real estate-owner occupied | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	68,297	62,140
Commercial real estate-owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	58,677	54,370
Construction real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	844,497	891,059
Construction real estate | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	841,983	877,052
Construction real estate | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	1,179	11,849
Construction real estate | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	1,335	2,158
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	363,679	358,616
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	335,347	332,318
Residential | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	5,551	4,126
Residential | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	22,781	22,172
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	253,697	276,512
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	247,292	264,741
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	5,302	11,766
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	1,103	5
Total loans classified by performing status
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees	$ 80,594	$ 108,126

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