Quarterly report pursuant to Section 13 or 15(d)

Schedule of Restricted Stock Unit Outstanding (Detail)

v2.4.0.8
Schedule of Restricted Stock Unit Outstanding (Detail) (Restricted Stock Units (RSUs))
 3 Months Ended
Mar. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Awards expected to vest by period 2,469,465
2014 | Restricted Stock Units subject to service requirements
  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Awards expected to vest by period 355,864
2014 | Restricted Stock Units subject to service and other requirements
  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Awards expected to vest by period 67,399 [1]
2015 | Restricted Stock Units subject to service requirements
  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Awards expected to vest by period 713,547
2015 | Restricted Stock Units subject to service and other requirements
  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Awards expected to vest by period 182,422 [2]
2016 | Restricted Stock Units subject to service and other requirements
  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Awards expected to vest by period 1,150,233 [3]
[1] In addition to service requirements, these RSUs are also subject to TSR performance requirements not yet measureable, with awards ranging from 0% to 150% of amounts granted.
[2] In addition to service requirements, these RSUs are also subject to TSR performance requirements not yet measureable, with awards ranging from 0% to 200% of amounts granted.
[3] In addition to service requirements, these RSUs are also subject to Company specific performance requirements not yet measureable, with awards ranging from 0% to 100% of amounts granted.