Stock-Based Compensation and Other Benefit Plans (Summary of Stock-Based Compensation) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
| Total stock-based compensation | $ 114 | $ 3,506 | $ 2,388 |
| Equity Award [Member] | |||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
| Total stock-based compensation | 848 | 985 | 820 |
| Liability Award [Member] | |||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
| Total stock-based compensation | $ (734) | $ 2,521 | $ 1,568 |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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