|
Employee Benefit Plan - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
Age
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Defined benefit plan contributions by employees | 15.00% | ||
| Minimum age for employees to be covered under profit sharing plan | 21 | ||
| Minimum service period for employees to be covered under profit sharing plan | 6 months | ||
| Vesting period for company contributions to benefit plan | 6 years | ||
| Employer contribution | $ 0 | $ 0 | $ 1.3 |
| X | ||||||||||
|
- Definition
Defined benefit plan contributions by employee. No definition available.
|
| X | ||||||||||
|
- Definition
Minimum age for employees to be covered under profit sharing plan. No definition available.
|
| X | ||||||||||
|
- Definition
Minimum service period for employees to be covered under profit sharing plan. No definition available.
|
| X | ||||||||||
|
- Definition
Vesting period for company contributions to benefit plan. No definition available.
|
| X | ||||||||||
|
- Definition
The increase in the fair value of plan assets from contributions made by the employer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|