Loans - Summary of Portfolio Loans by Category (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	$ 12,344,705	$ 11,800,338
Interest rate collars
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notional	$ 100,000
Derivative, Cap Interest Rate	8.14%
Derivative, Floor Interest Rate	5.25%
Interest Rate Collar 2
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notional	$ 50,000
Derivative, Cap Interest Rate	4.21%
Derivative, Floor Interest Rate	3.23%
Interest Rate Collar 3
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notional	$ 100,000
Derivative, Cap Interest Rate	4.71%
Derivative, Floor Interest Rate	3.25%
Noncovered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	$ 12,347,329	11,801,093
Unearned loan fees, net	(2,624)	(755)
Loans and Lease Receivable, Including Unearned Loan Fees	12,344,705	11,800,338
Noncovered Loans \| C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	5,472,681	5,236,473
Noncovered Loans \| Commercial - investor owned
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	3,237,616	2,986,906
Noncovered Loans \| Commercial - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	2,482,819	2,460,761
Noncovered Loans \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	747,202	689,357
Noncovered Loans \| Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	356,507	367,127
Noncovered Loans \| Total real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	6,824,144	6,504,151
Noncovered Loans \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	$ 50,504	$ 60,469

Financing Receivable, Excluding Accrued Interest, Unearned Loan Fees, Net

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Nominal or face amount used to calculate payments on the derivative asset.

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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