Allowance for Credit Losses - Schedule of Loans for Borrowers Experiencing Financial Difficulties Modified (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms		$ 47,229
Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms	$ 19,882	20,817
Commercial | Commercial, industrial and other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms		39,153
Commercial | Commercial, industrial and other | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms	18,727	18,749
Commercial real estate | Non-construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms	5,709
Commercial real estate | Non-construction | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms	95	923
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms		203
Home equity | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms	203	203
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms		2,113
Residential real estate | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms	817	902
Premium finance receivables | Property and casualty insurance loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms		51
Premium finance receivables | Property and casualty insurance loans | Payments in Default
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans in payment default under restructured terms	$ 40	$ 40