Summary of Significant Accounting Policies - Stock-Based Compensation (Detail) |
6 Months Ended |
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Jun. 30, 2017
shares
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| Restricted Stock Units to be Settled in Cash | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Amount in cash received for each RSU is equal to the fair value of this number of Quanta common stock shares (in shares). | 1 |
| X | ||||||||||
- Definition Amount in cash received for each RSU is equal to the fair value of this number of Quanta common stock shares. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Details
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