Common Stock - Summary of Restricted Stock Unit Award Activity (Detail) - Restricted Stock Unit [Member] |
6 Months Ended |
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Jun. 30, 2020
$ / shares
shares
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |
| Number of Shares, Beginning Balance | shares | 500 |
| Number of Shares, Forfeited or expired | shares | (33) |
| Number of Shares, Ending Balance | shares | 467 |
| Weighted-Average Grant Date Fair Value, Beginning Balance | $ / shares | $ 579.85 |
| Weighted-Average Grant Date Fair Value, Forfeited or expired | $ / shares | 578.00 |
| Weighted-Average Grant Date Fair Value, Ending Balance | $ / shares | $ 579.98 |
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- Details
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