Supplemental Compensation Plans, Executive Elective Deferred Compensation Plan and Director Elective Deferred Fee Plan (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Executive Deferral Plan [Member] \| Executive [Member]
Deferred Compensation Plan [Abstract]
Single-premium payment on insurance purchased	$ 1,125
Cash surrender value of life insurance	2,749	$ 2,682
Net decrease in accrued liabilities	28	26
Payments	35	35
Interest expenses	7	9
Director Deferral Plan [Member] \| Directors [Member]
Deferred Compensation Plan [Abstract]
Cash surrender value of life insurance	153	148
Net decrease in accrued liabilities	4	4
Payments	5	5
Interest expenses	$ 1	$ 1

The interest accrued during the period pertaining to the deferred compensation arrangement.

No definition available.

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- Definition

Single-premium payment aggregate for life insurance on employees.

+ References

No definition available.

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Amount of distribution made to individual in accordance with deferred compensation arrangement.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in obligation for pension and other postretirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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- Details

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