Revenue Recognition (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Investment and trust services fees	$ 6,040	$ 6,141
Estate management services Fees recognition period	18 months
Asset Management Fees [Member]
Disaggregation of Revenue [Line Items]
Investment and trust services fees	$ 5,600	5,500
Estate Management Services Fees [Member]
Disaggregation of Revenue [Line Items]
Investment and trust services fees	194	365
Commisions [Member]
Disaggregation of Revenue [Line Items]
Investment and trust services fees	$ 212	$ 234

Includes (1) underwriting revenue (the spread between the resale price received and the cost of the securities and related expenses) generated through the purchasing, distributing and reselling of new issues of securities (alternatively, could be a secondary offering of a large block of previously issued securities); and (2) fees earned for mergers, acquisitions, divestitures, restructurings, and other types of financial advisory services.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(b),(d))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

Name:	us-gaap_InvestmentBankingRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration