Segment Reporting (Narrative) (Details)	3 Months Ended
Mar. 31, 2024 USD ($) segment	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment	2
Amortization of intangible assets	$ 82,000	$ 83,000
Goodwill	11,000,000.0		$ 11,000,000.0
Community Banking Segment [Member]
Segment Reporting Information [Line Items]
Intangible assets	400,000		500,000
Trust and Investment Services Segment [Member]
Segment Reporting Information [Line Items]
Amortization of intangible assets	52,000	$ 52,000
Operating Segments [Member] \| Trust and Investment Services Segment [Member]
Segment Reporting Information [Line Items]
Nonfiduciary Assets	700,000		700,000
Intangible assets	$ 600,000		$ 600,000

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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