Allowance for Credit Losses - Rollforward of the Reserve for Unfunded Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	$ 28,958	$ 29,222
Provision	1,183	3,300
Reserve for unfunded commitments, ending balance	30,141	32,522	$ 30,141	$ 32,522
Commercial and Industrial
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	7,640	12,808
Provision	478	446
Reserve for unfunded commitments, ending balance	8,118	13,254	8,118	13,254
Commercial real estate
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	3,750	978
Provision	(1,397)	255
Reserve for unfunded commitments, ending balance	2,353	1,233	2,353	1,233
Construction
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	6,084	7,873
Provision	630	902
Reserve for unfunded commitments, ending balance	6,714	8,775	6,714	8,775
Residential Lending: Residential Mortgage
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	32
Provision	(4)
Reserve for unfunded commitments, ending balance	28		28
Residential Lending: Home Equity Line
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	11,423	7,521
Provision	1,473	1,669
Reserve for unfunded commitments, ending balance	12,896	9,190	12,896	9,190
Consumer
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	29	42
Provision	3	28
Reserve for unfunded commitments, ending balance	32	70	32	70
Reserve for unfunded commitments
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			30,322	30,603
Provision			(181)	1,919
Reserve for unfunded commitments, ending balance	30,141	32,522	30,141	32,522
Reserve for unfunded commitments | Commercial and Industrial
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			8,615	11,719
Provision			(497)	1,535
Reserve for unfunded commitments, ending balance	8,118	13,254	8,118	13,254
Reserve for unfunded commitments | Commercial real estate
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			2,114	1,328
Provision			239	(95)
Reserve for unfunded commitments, ending balance	2,353	1,233	2,353	1,233
Reserve for unfunded commitments | Construction
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			8,963	9,037
Provision			(2,249)	(262)
Reserve for unfunded commitments, ending balance	6,714	8,775	6,714	8,775
Reserve for unfunded commitments | Residential Lending: Residential Mortgage
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			15	2
Provision			13	(2)
Reserve for unfunded commitments, ending balance	28		28
Reserve for unfunded commitments | Residential Lending: Home Equity Line
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			10,546	8,452
Provision			2,350	738
Reserve for unfunded commitments, ending balance	12,896	9,190	12,896	9,190
Reserve for unfunded commitments | Consumer
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance			69	65
Provision			(37)	5
Reserve for unfunded commitments, ending balance	$ 32	$ 70	$ 32	$ 70