Loans and Allowance for Credit Losses - Restructured Loans by Type of Concession (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) loan	Sep. 30, 2022 USD ($) loan	Sep. 30, 2023 USD ($) loan	Sep. 30, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	0	7	0	23
Post-Modification Outstanding Recorded Investment	$ 6,347	$ 181	$ 22,918	$ 2,077
Pre-Modification Outstanding Recorded Investment		185		2,545
Bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		181		1,215
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Extend Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment	6,347	0	22,727	862
Modify Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Modify Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0		$ 0
Commercial real estate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan		0		0
Post-Modification Outstanding Recorded Investment	0	$ 0	13,505	$ 0
Pre-Modification Outstanding Recorded Investment		0		0
Commercial real estate | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial real estate | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial real estate | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	13,505	0
Commercial real estate | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial real estate | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0		$ 0
Commercial and industrial | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan		0		0
Post-Modification Outstanding Recorded Investment	6,347	$ 0	6,892	$ 0
Pre-Modification Outstanding Recorded Investment		0		0
Commercial and industrial | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial and industrial | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial and industrial | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment	6,347	0	6,892	0
Commercial and industrial | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial and industrial | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0		$ 0
Commercial construction | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan		0		0
Post-Modification Outstanding Recorded Investment	0	$ 0	1,610	$ 0
Pre-Modification Outstanding Recorded Investment		0		0
Commercial construction | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial construction | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial construction | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	1,610	0
Commercial construction | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Commercial construction | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0		$ 0
Business banking | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan		0		0
Post-Modification Outstanding Recorded Investment		$ 0		$ 0
Pre-Modification Outstanding Recorded Investment		0		0
Business banking | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Business banking | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Business banking | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Business banking | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Business banking | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0		$ 0
Consumer real estate | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan		6		21
Post-Modification Outstanding Recorded Investment	0	$ 172	253	$ 2,066
Pre-Modification Outstanding Recorded Investment		173		2,530
Consumer real estate | Bankruptcy | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		172		1,204
Consumer real estate | Other | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Consumer real estate | Extend Maturity | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment	$ 0	0	$ 62	862
Consumer real estate | Modify Rate | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Consumer real estate | Modify Payments | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0		$ 0
Other consumer | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan		1		2
Post-Modification Outstanding Recorded Investment		$ 9		$ 11
Pre-Modification Outstanding Recorded Investment		12		15
Other consumer | Bankruptcy | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		9		11
Other consumer | Other | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Other consumer | Extend Maturity | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Other consumer | Modify Rate | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		0		0
Other consumer | Modify Payments | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0		$ 0