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Stock-Based Compensation and Other Benefit Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jun. 25, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock options granted, reduction ratio for number authorized |  | 1.00% |  |  |
Payments to settle stock appreciation rights |  | $ 275 | $ 491 | $ 82 |
Proceeds from stock options exercised |  | 100 | 300 | 500 |
Options granted | 644,758 |  |  |  |
Options granted, weighted average exercise price | $ 1.23 |  |  |  |
Stock-based compensation |  | $ 114 | $ 3,506 | $ 2,388 |
Weighted average grant date fair value - ($/share) |  | $ 0.79 | $ 1.06 | $ 0.68 |
Defined Contribution Plan, Cost |  | $ 400 | $ 400 | $ 300 |
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
Awards available |  | 3,744,737 |  |  |
Stock Option [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Awards, vesting period |  | 5 years |  |  |
Award granted life | 10 years | 5 years |  |  |
Intrinsic value of options exercied |  | $ 43,000 | 300 | 600 |
Unrecognized compensation costs |  | $ 500 |  |  |
Compensation costs expected to be recognized |  | 2 years 10 months 24 days |  |  |
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 | $ 1.42 |  |  |  |
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 | $ 1.63 |  |  |  |
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 | $ 1.88 |  |  |  |
Restricted Stock [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Awards, vesting period |  | 3 years |  |  |
Other awards granted |  | 971,000 |  |  |
Other awards granted, weighted average exercise price | $ 1.23 | $ 1.23 |  |  |
Unrecognized compensation costs |  | $ 800 |  |  |
Compensation costs expected to be recognized |  | 1 year 4 months 24 days |  |  |
Fair value of awards vested |  | $ 200 | $ 600 | $ 400 |
Weighted average grant date fair value - ($/share) |  | $ 1.35 | $ 2.00 | $ 1.71 |
Restricted Stock [Member] | Employees [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Other awards granted | 710,851 |  |  |  |
Restricted Stock [Member] | Director [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Other awards granted | 260,164 |  |  |  |
Stock Appreciation Rights (SARs) [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation |  | $ (700) |  |  |
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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