Compensation and Other Benefit Plans - Modification of Stock Options (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Compensation and Other Benefit Plans | ||
| Stock-based compensation expense recorded due to modification | $ 0.0 | $ 0.5 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition An excess of the fair value of the modified award over the fair value of the award immediately before the modification. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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