Cash credit entitlements as a percent of grant.

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- Definition

Restricted stock as a percent of grant.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Offering Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price Percentage, Offering Date

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount, after tax, of expense for award under share-based payment arrangement.

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

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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

Number of shares authorized for issuance under share-based payment arrangement.

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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

Gross number of share options (or share units) granted during the period.

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

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Equity Plans and Equity Based Compensation (Narrative) (Details)			3 Months Ended		12 Months Ended
	Oct. 01, 2019 shares	Aug. 16, 2019 shares	Mar. 31, 2021 USD ($) plan shares	Mar. 31, 2020 USD ($) shares	Dec. 31, 2020 shares	Dec. 31, 2019 installment
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans \| plan			2
Number of options granted (in shares) \| shares			0	0
Stock compensation expense			$ 83,000	$ 244,000
Stock compensation expense, net of tax			305,000	386,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense			0	0
Unrecognized compensation expense			0	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			$ 4,083,000	$ 1,665,000
Awards granted during period percentage					66.67%	60.00%
Awards granted cash credit entitlement percentage					33.33%	40.00%
Number of annual vesting installments \| installment						3
Restricted stock granted during period (in shares) \| shares			44,123	41,752
Unvested restricted stock awards (in shares) \| shares			108,524		64,401
Restricted Stock \| Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted during period percentage			100.00%
Restricted Stock \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			100.00%
Restricted Stock \| Vesting Period One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage					100.00%	33.33%
Restricted Stock \| Vesting Period One \| Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			33.33%
Restricted Stock \| Vesting Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage					50.00%
Restricted Stock \| Vesting Period Two \| Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			33.33%
Restricted Stock \| Vesting Period Three \| Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			33.33%
2009 Long-Term Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for new grants (in shares) \| shares			0
2009 Long-Term Equity Incentive Plan \| Restricted Stock \| Vesting Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage						33.33%
2009 Long-Term Equity Incentive Plan \| Restricted Stock \| Vesting Period Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage					50.00%	33.33%
2019 LTI Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares) \| shares			1,000,000
2009 ESPP \| Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares) \| shares		750,000
Stock compensation expense			$ 10,000	$ 16,000
Unrecognized compensation expense			0	0
Purchase price percentage		95.00%
Stock compensation expense, net of tax			$ 7,000	$ 12,000
2019 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for new grants (in shares) \| shares	750,000
Purchase price percentage	95.00%
Offering periods	3 months