Allowance for Credit Losses - Rollforward of the Reserve for Unfunded Commitments (Details) - Reserve for unfunded commitments - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	$ 35,605	$ 33,835
Provision	(792)	2,364
Reserve for unfunded commitments, ending balance	34,813	36,199
Commercial and Industrial
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	9,116	7,811
Provision	(324)	(658)
Reserve for unfunded commitments, ending balance	8,792	7,153
Commercial Real Estate
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	1,787	2,004
Provision	86	(312)
Reserve for unfunded commitments, ending balance	1,873	1,692
Construction
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	8,048	7,470
Provision	(1,151)	1,482
Reserve for unfunded commitments, ending balance	6,897	8,952
Residential Lending: Residential Mortgage
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	24	30
Provision	(10)	(13)
Reserve for unfunded commitments, ending balance	14	17
Residential Lending: Home Equity Line
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	16,589	16,483
Provision	598	1,853
Reserve for unfunded commitments, ending balance	17,187	18,336
Consumer
Reserve for unfunded commitments:
Reserve for unfunded commitments, beginning balance	41	37
Provision	9	12
Reserve for unfunded commitments, ending balance	$ 50	$ 49