Represents performance measurement period for share-based compensation arrangement by share-based payment award.

No definition available.

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- Definition

Represents shares issued based on performance for percentage of award for share-based compensation arrangement by share-based payment award.

+ References

No definition available.

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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 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.

+ References

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- Definition

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

+ References

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- Definition

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

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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.

+ References

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- Definition

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

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

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

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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- Definition

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

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Note G - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2016	Aug. 31, 2020	Dec. 31, 2018	Aug. 31, 2018	May 31, 2013
Share-based Payment Arrangement, Expense	$ 800	$ 1,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	87,747	126,696				171,369
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 1.67
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 23
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 270 days
Stock Appreciation Rights (SARs) [Member]
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 0
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 1,400
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 10 days
Phantom Share Units (PSUs) [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	175 days
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 10
Performance Shares [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 75
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	8 years 251 days
Share- based Compensation Arrangement By Share-based Payment Award, Performance Measurement Period (Year)	3 years
Performance Shares [Member] \| Minimum [Member]
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Percentage Of Award, Shares To Be Issued, Based On Performance	0.00%
Performance Shares [Member] \| Maximum [Member]
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Percentage Of Award, Shares To Be Issued, Based On Performance	100.00%
Cash Performance Shares [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 0
Share- based Compensation Arrangement By Share-based Payment Award, Performance Measurement Period (Year)	3 years
Equity Incentive Plan 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)					2,521,244
Omnibus Incentive Plan 2013 [Member] \| First Four Anniversaries [Member] \| Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			25.00%
Omnibus Incentive Plan 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)								500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	20,700	18,000			0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)	56,000
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	$ 1.57
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 115.20
Omnibus Incentive Plan 2013 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Omnibus Incentive Plan 2013 [Member] \| Cash Performance Shares [Member]
Share- based Compensation Arrangement By Share-based Payment Award, Performance Measurement Period (Year)			3 years	3 years
Omnibus Incentive Plan 2013 [Member] \| Cash Performance Shares [Member] \| Minimum [Member]
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Percentage Of Award, Shares To Be Issued, Based On Performance	0.00%
Omnibus Incentive Plan 2013 [Member] \| Cash Performance Shares [Member] \| Maximum [Member]
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Percentage Of Award, Shares To Be Issued, Based On Performance	100.00%
Omnibus Incentive Plan 2013 [Member] \| First Four Anniversaries [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			25.00%
Omnibus Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)							553,673
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)								0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)	32,000
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	$ 76.80
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 184.65
Equity Incentive Plan 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	0
Equity Incentive Plan 2020 [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Equity Incentive Plan 2020 [Member] \| First Four Anniversaries [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%