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Employee Benefit Plans (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Common stock, shares issued	4,628,657	4,740,657
401(K) Defined Contribution Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum contribution percentage of pretax annual compensation	19.00%
Defined contribution benefit plan, company contribution	$ 454,000	$ 411,000
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
SERP expense	561,000	477,000
SERP related liability	3,726,000	3,165,000
Cash surrender values of life insurance policies	19,237,000	$ 18,785,000
Employee Stock Purchase Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution benefit plan, company contribution	$ 0
Common stock, shares issued	0	0

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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Amount of liability, recognized in statement of financial position, for defined benefit other postretirement plan. Excludes pension plan.

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