(Loss) Earnings Per Share - Additional Information (Detail) - Stock Options [Member] - shares |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
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| Summary Of Significant Accounting Policies [Line Items] | ||||
| Shares with anti-dilutive effect | 1,000,000 | 600,000 | ||
| Maximum [Member] | ||||
| Summary Of Significant Accounting Policies [Line Items] | ||||
| Shares with anti-dilutive effect | 100,000 | 100,000 | ||
| X | ||||||||||
- Definition Summary of significant accounting policies. No definition available.
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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