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Employee Benefit Plans, Defined Contribution Plan, Deferred Compensation and Other (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) Employee	Dec. 31, 2019 USD ($)
Defined Contribution Plan [Abstract]
Maximum elective employee contribution percentage	15.00%
Company matching contribution percentage	100.00%
Maximum annual Company contribution for each employee	$ 2,800
Maximum annual Company contribution as a percentage of employee's compensation	4.00%
Annual Company discretionary contribution	$ 1,200
Number of employees participating in enhanced feature of plan | Employee	56
Contributions to defined contribution plan	$ 313,000	$ 300,000
Deferred Compensation [Abstract]
Present value of future obligations	4,757,000	4,416,000
Total cash value of insurance policies	3,735,000	3,667,000
Net expenses under deferred compensation plans	585,000	670,000
Other [Abstract]
Amount payable upon retiree's death	2,000
Present value of future obligations	165,000	137,000
Expenses under retiree life insurance program	$ 38,000	$ 34,000

X

- 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

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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No definition available.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

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Percentage employer matches of the employee's percentage contribution matched.

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- Definition

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

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- Definition

Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits.

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- Definition

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

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- Definition

Element represents the amount paid to the beneficiary upon the death of a retiree.

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- Definition

The annual employer discretionary contribution for those employees entitled to the enhanced feature of the defined contribution plan.

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- Definition

Maximum amount per employee, by the terms of the plan, that the employer may contribute to a defined contribution plan.

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- Definition

The number of employees participating in the enhanced feature of the defined contribution plan.

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