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Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Restricted Stock [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Remaining requisite service period |  |  | 21 months |  |
Unearned compensation | $ 871 |  | $ 871 |  |
Time-Vested Stock Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unearned compensation related to options | 1,135 |  | $ 1,135 |  |
Remaining service period |  |  | 28 months |  |
Stock Appreciation Rights (SARs) [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award Vesting Period |  |  | 3 years |  | 3 years
Award contractual term |  |  | 10 years |  | 10 years
Allocated share based compensation expense (income) | (365) | $ 192 | $ 2,315 | $ 261 |
Estimated fair value | 7,261 |  | $ 7,261 |  |
Granted (shares) |  |  | 1,735,500 |  |
Stock appreciation award vesting rights |  |  | Vesting of the 2021 cash settled stock appreciation rights is contingent upon the achievement of a thirty-day trailing average fair market value of a share of the Company’s common stock of 133.3% ($3.17) |  |
Exercise price |  |  | $ 2.38 |  |
Stock awards, Grants in Period, Weighted Average Grant Date Fair Value |  |  | $ 1.74 |  |
Including Liability Based Awards [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Allocated share based compensation expense (income) | $ (133) | $ 485 | $ 2,829 | $ 578 |
Certain Employees [Member] | Stock Appreciation Rights (SARs) [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted |  |  |  |  | 1,139,464

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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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