Stock-Based Payments - Restricted Stock Units (Details) $ in Millions |
9 Months Ended |
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Sep. 30, 2021
USD ($)
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |
| Unrecognized compensation costs | $ 12.2 |
| Period in which compensation costs will be recognized | 2 years 9 months 18 days |
| Restricted Stock Units | |
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |
| Vesting period | 4 years |
| Vesting (as a percent) | 25.00% |
| Unrecognized compensation costs | $ 10.4 |
| Period in which compensation costs will be recognized | 2 years 3 months 18 days |
| Restricted Stock Units | Executive Officers | |
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |
| Vesting period | 3 years |
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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. 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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- Definition Percentage of vesting of award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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