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Stock-Based Compensation and Other Benefit Plans (Narrative) (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 25, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Payments to settle stock appreciation rights |  |  | $ 2,900,000 | $ 2,933,000 | $ 0 |
Proceeds from stock options exercised |  |  | $ 1,100,000 | $ 1,100,000 |  |
Options granted |  | 401,759 |  |  |  |
Options granted, weighted average exercise price |  | $ 3.14 |  |  |  |
Severance cost as percentage of target bonus |  |  |  | 75.00% |  |
Long-Term Incentive Plan, 2020 [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Awards authorized |  |  |  |  |  | 5,500,000
Increase in shares authorized | 3,750,000 |  |  |  |  |
Awards available | 7,555,600 |  | 7,555,600 | 7,555,600 |  |
Performance Shares [Member] | Long-Term Incentive Plan, 2020 [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Other awards granted |  |  | 0 | 0 |  |
Stock Option [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Award granted life |  | 10 years |  |  |  |
Shares withheld to satisfy tax withholding obligations |  |  |  | 400,431 | 0 |
Stock Option [Member] | Share-based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Vesting percentage |  | 33.33% |  |  |  |
Share price for vesting scheme |  | $ 3.61 |  |  |  |
Stock Option [Member] | Share-based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Vesting percentage |  | 33.33% |  |  |  |
Share price for vesting scheme |  | $ 4.15 |  |  |  |
Stock Option [Member] | Share-based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Vesting percentage |  | 33.33% |  |  |  |
Share price for vesting scheme |  | $ 4.78 |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Awards, vesting period |  |  |  | 3 years |  |
Shares withheld to satisfy tax withholding obligations |  |  |  | 68,134 | 40,432 |
Other awards granted |  |  |  | 605,000 |  |
Other awards granted, weighted average exercise price |  |  |  | $ 3.13 |  |
Restricted Stock [Member] | Employees [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Other awards granted | 78,432 | 526,147 |  |  |  |
Other awards granted, weighted average exercise price | $ 3.06 | $ 3.14 |  |  |  |
Stock Appreciation Rights (SARs) [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Other awards granted |  |  |  | 0 | 0 |
Minimum [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Severance cost as percentage of salary |  |  |  | 50.00% |  |
Maximum [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Severance cost as percentage of salary |  |  |  | 100.00% |  |

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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. + 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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