Loans and Loans Held for Sale - Restructured Loans By Segment and Type of Concession (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) loan	Sep. 30, 2021 USD ($) loan	Sep. 30, 2022 USD ($) loan	Sep. 30, 2021 USD ($) loan	Dec. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	7	11	23	29
Pre-Modification Outstanding Recorded Investment	$ 185	$ 698	$ 2,545	$ 8,919
Post-Modification Outstanding Recorded Investment	181	689	2,077	$ 8,513
Number of modified loans | loan					8
Modified loans					$ 28,800
Commercial Loans | CARES Act, Paycheck Protection Program Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of modified loans | loan				42
Modified loans				$ 58,900
Bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	181	317	1,215	866
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	80
Extend Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	372	862	2,223
Modify Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Modify Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 5,343
Commercial real estate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	0	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0	0	0
Commercial real estate | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial real estate | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial real estate | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial real estate | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial real estate | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial and industrial | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	0	2	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 342	$ 0	$ 6,304
Post-Modification Outstanding Recorded Investment	0	341	0	5,968
Commercial and industrial | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial and industrial | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial and industrial | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	341	0	772
Commercial and industrial | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial and industrial | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 5,196
Commercial construction | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	0	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0	0	0
Commercial construction | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial construction | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial construction | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial construction | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Commercial construction | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Business banking | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	0	0	0	7
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 1,551
Post-Modification Outstanding Recorded Investment	0	0	0	1,500
Business banking | Bankruptcy | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Business banking | Other | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	80
Business banking | Extend Maturity | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	1,420
Business banking | Modify Rate | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Business banking | Modify Payments | Commercial Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Consumer real estate | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	6	9	21	20
Pre-Modification Outstanding Recorded Investment	$ 173	$ 356	$ 2,530	$ 1,064
Post-Modification Outstanding Recorded Investment	172	348	2,066	1,045
Consumer real estate | Bankruptcy | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	172	317	1,204	866
Consumer real estate | Other | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Consumer real estate | Extend Maturity | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	31	862	31
Consumer real estate | Modify Rate | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Consumer real estate | Modify Payments | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 147
Other Consumer | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | loan	1	0	2	0
Pre-Modification Outstanding Recorded Investment	$ 12	$ 0	$ 15	$ 0
Post-Modification Outstanding Recorded Investment	9	0	11	0
Other Consumer | Bankruptcy | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	9	0	11	0
Other Consumer | Other | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Other Consumer | Extend Maturity | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Other Consumer | Modify Rate | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Other Consumer | Modify Payments | Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0