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Loans and Allowance for Credit Losses for Loans - Loans Portfolio Sales and Transfers to Loans Held for Sale (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 29, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans to loans held for sale, net		$ 23,411	$ 1,042,725	$ 10,000
Gains (losses) on sales of loans, net		6,906	(5,840)	6,054
Proceeds from sale of commercial premium finance lending division		0	98,060	$ 0
Nonperforming financial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of loans to loans held for sale, net		18,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Commercial Premium Finance Lending Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of commercial premium finance lending division	$ 96,800
Disposal group, including discontinued operation, assets	95,500
Disposal group, including discontinued operation, financing receivable	93,600
Disposal group, including discontinued operation, liabilities	$ 2,800
Gain (loss) on disposition of business			3,600
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, sale			75,500
Construction \| Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gains (losses) on sales of loans, net		(1,300)
Commercial real estate \| Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, sale			79,700
Transfer of loans to loans held for sale, net		14,100
Commercial real estate \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, sale			151,000
Transfer of loans to loans held for sale, net		$ 10,200	933,000
Gains (losses) on sales of loans, net			$ (13,700)