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Loans and Allowance for Credit Losses - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	$ 590,820	$ 447,979
Nonaccrual With No Related Allowance	95,580	95,004
Past Due 90 Days or More and Accruing	1,525	4,060
Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	177,240	119,507
Nonaccrual With No Related Allowance	14,043	30,551
Past Due 90 Days or More and Accruing	394	861
Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	319,069	233,856
Nonaccrual With No Related Allowance	81,537	64,453
Past Due 90 Days or More and Accruing	1,046	3,126
BBCC
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	3,508	4,672
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	0	0
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	63,446	60,454
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	34	0
Indirect
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	4,923	5,372
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	18	0
Direct
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	4,473	3,407
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	33	0
Home equity
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	18,161	20,711
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	$ 0	$ 73

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