Stock-Based Compensation (Outstanding Awards) (Details) shares in Thousands, $ in Millions |
12 Months Ended |
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Dec. 31, 2019
USD ($)
shares
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| Series A Common Stock | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Shares reserved for issuance upon exercise (in shares) | shares | 600 |
| Series B Common Stock | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Shares reserved for issuance upon exercise (in shares) | shares | 1,200 |
| Options | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized compensation cost related to unvested options | $ | $ 2.5 |
| Weighted average period for compensation cost to be recognized | 1 year 7 months 6 days |
| RSAs | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Unrecognized compensation cost related to unvested restricted shares | $ | $ 18.2 |
| Weighted average period for compensation cost to be recognized | 2 years 6 months |
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- Definition Aggregate number of common shares reserved for future issuance. 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 Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. 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 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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