Equity-Based Compensation Expense - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
|
Jun. 30, 2012
|
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total stock based compensation expense, net of forfeitures | $ 10,589 | $ 16,733 | $ 18,652 | $ 33,173 |
RSU [Member] | 2010 Equity Plan [Member]
|
||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
RSUs issued under the plan | 35,491 | |||
Option vesting rights | RSUs vest 100% on December 31, 2015 | |||
Restricted share units weighted average fair value of grants | $ 997.66 | |||
Options [Member] | 2010 Equity Plan [Member]
|
||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Option vesting rights | 25% increments beginning on December 31, 2015 | |||
Stock issued under the plan | 103,074 | |||
Number of years for option expiration | 10 years |