Stock-based Compensation - Other than Options (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|---|
| Restricted Stock | Common Stock Class A and C | |||
| Stock Based Compensation | |||
| Fair value of outstanding grants | $ 2,600 | $ 112 | $ 116 |
| Unvested shares outstanding | 47 | ||
| Weighted average grant date fair value awards outstanding unvested (in dollars per share) | $ 84.85 | ||
| Skyhook | LTIPs | PARs and PSUs | Other liabilities | Level 2 | |||
| Stock Based Compensation | |||
| Deferred compensation | $ 1,200 | $ 1,100 |
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- Definition Fair value of equity-based compensation awards outstanding. Excludes stock and unit options. No definition available.
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable after one year (or the operating cycle, if longer). No definition available.
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Per share or unit weighted-average fair value of 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 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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