Defined Benefit Plan, Annual Vesting Percentage

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- Definition

Defined Benefit Plan, Benefit Obligation, Percent Of Average Executive Base Salary

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- Definition

Defined Benefit Plan, Benefit Obligation, Percent Of Average Executive Base Salary, Adjustment Thereafter

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- Definition

Defined Benefit Plan, Expected Future Benefit Payment

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- Definition

Defined Benefit Plan, Number of Annual Payments After Separation

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- Definition

Defined Benefit Plan, Payment Term After Separation

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- Definition

Interest paid on deferred fees

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- Definition

Share Based Compensation Arrangement By ShareBased Payment Award Award Expiration Period

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- Definition

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them.

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-Name Accounting Standards Codification
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- Definition

Commitment made to pay deferred cash remuneration expressed as a percentage of the individual's base salary.

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- Definition

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

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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- Definition

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

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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

Description of defined contribution pension and other postretirement plans.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The increase (decrease) during the reporting period in the obligation created by employee agreements whereby earned compensation will be paid in the future.

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- Definition

Face value (death benefits) of the life insurance policies underlying the life settlement contracts accounted for under the fair value method.

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- Definition

Period expense related to postemployment benefits.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

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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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Employee Benefit Plans - Narrative (Details) $ in Thousands	3 Months Ended
Employee Benefit Plans - Narrative (Details) $ in Thousands	Mar. 31, 2021 USD ($) installment shares	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award
Options, outstanding (in shares) \| shares	749,333		672,800
Defined contribution plan, maximum annual contributions per employee, percent	80.00%
Defined contribution plan employer discretionary contribution amount	$ 261	$ 185
Deferred compensation	128	491
Interest paid on deferred fees	28	28
Deferred compensation arrangement with individual, distributions paid	$ 3	3
Description of defined contribution pension and other postretirement plans	The retirement benefit under the SERP is an amount equal to sixty percent (60%) of the average of the President and CEO’s base salary for the thirty-six (36) months immediately preceding the executive’s separation from service after age 66, adjusted annually thereafter by two percent (2%)
Defined benefit plans future payments	$ 3,845	3,639	$ 3,845	$ 3,571
Director
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation arrangement guaranteed award percentage	100.00%
Executive Management
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation arrangement guaranteed award percentage	100.00%
SERP \| President and CEO
Share-based Compensation Arrangement by Share-based Payment Award
Percent of average executive base salary	60.00%
Payment term after separation	36 months
Percent of average executive base salary, adjustment thereafter	2.00%
Number of annual payments after separation \| installment	15
Total estimated future payments	$ 6,200
Discount rate used to calculate the present value of the benefit obligation	4.00%
Annual vesting percentage	3.00%
Award vesting rights, percentage	100.00%
Other Postretirement Benefits Plan \| Executive Management
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation arrangement guaranteed award percentage	7.50%
Award vesting rights, percentage	100.00%
Accrued expense under the plan	$ 35
Life insurance plan with a post retirement death benefit	250
Life insurance plan aggregate expenses	$ 1	$ 1
Other Postretirement Benefits Plan \| Executive Management \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Deferred compensation arrangement guaranteed award percentage	15.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	10 years
Award expiration period	3 years
Options, outstanding (in shares) \| shares	500,000
Number of shares available for grant (in shares) \| shares	73,150
Compensation cost not yet recognized	$ 1,700
Compensation cost recognition weighted average period	2 years 3 months 18 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Compensation cost recognition weighted average period	2 years 10 months 24 days
Nonvested awards, compensation not yet recognized, awards other than options	$ 1,600
2019 Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares available for grant (in shares) \| shares	145,350