Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Par value of stock bought from and sold to the federal home loan bank (in dollars per share)	$ 100
Loan-to-value ratio benchmark percent	80.00%
Shareholders' equity	$ 207,542,000	$ 233,782,000	$ 235,856,000
Qualified affordable housing project investments	7,300,000	1,100,000
Qualified affordable housing project investments, amortized expense	0	0
Retained Earnings [Member]
Shareholders' equity	$ 94,630,000	$ 118,087,000	$ 104,508,000
Building and Leasehold Improvements [Member] \| Minimum [Member]
Useful lives (in year(s))	seven
Building and Leasehold Improvements [Member] \| Maximum [Member]
Useful lives (in year(s))	40 years
Furniture And Equipment [Member] \| Minimum [Member]
Useful lives (in year(s))	one
Furniture And Equipment [Member] \| Maximum [Member]
Useful lives (in year(s))	15 years
Computer Equipment [Member] \| Minimum [Member]
Useful lives (in year(s))	two
Computer Equipment [Member] \| Maximum [Member]
Useful lives (in year(s))	five years

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Represents the par value of stock bought from and sold to the federal home loan bank.

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Qualified Affordable Housing Project Investments

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Amount of amortization expense of investment in qualified affordable housing projects.

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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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