Net Loss Per Share - Additional Information (Detail) shares in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2015
shares
|
Jun. 30, 2014
shares
|
Jun. 30, 2015
class
shares
|
Jun. 30, 2014
shares
|
|
| Earnings Per Share [Abstract] | ||||
| Total number of class of stock outstanding | class | 2 | |||
| Common stock equivalents excluded from the calculation of net loss per share (shares) | 4.3 | 3.2 | 5.7 | 3.3 |
| X | ||||||||||
- Definition Number of class of stock outstanding. No definition available.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- References No definition available.
|