Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2023
Business Acquisition [Line Items]
Assets acquisition consideration transferred in goodwill	$ 2,054		$ 2,054
Pettyyjohn, Wood & White, Inc. [Member]
Business Acquisition [Line Items]
Acquisition of assets under management and advisement		$ 650,000
Acquisition of assets under consideration payment in cash		10,500
Assets acquisition consideration transferred in goodwill		3,000
Preliminary fair value of assets acquired		9,300
Preliminary fair value of liabilities assumed		1,800
Adjustment to goodwill	818
Goodwill reduced by increase to deferred income taxes	1,800
Goodwill expected to be deductible for income tax	$ 2,100
Pettyyjohn, Wood & White, Inc. [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Assets acquisition consideration transferred in amortizable intangible assets		$ 8,400
Amortizable period of intangible assets		15 years