Stock-based Compensation - Stock Option Activity - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2020 |
Dec. 31, 2019 |
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| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | ||
| Total fair value of shares vested during the year | $ 1.3 | $ 1.5 |
| Total unrecognized compensation cost related to unvested share-based compensation arrangements | $ 2.0 | |
| Total unrecognized compensation cost related to unvested share-based compensation arrangements, recognition period | 2 years 4 months 24 days | |
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- References No definition available.
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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