Quarterly report pursuant to sections 13 or 15(d)

Description of Stock Plans - Additional Information (Detail)

v2.4.0.6
Description of Stock Plans - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended 1 Months Ended
Jun. 30, 2012
Feb. 12, 2008
2007 Employee, Director and Consultant Stock Plan
Sep. 27, 2007
2007 Employee, Director and Consultant Stock Plan
Sep. 27, 2007
2007 Employee, Director and Consultant Stock Plan
Maximum
Mar. 07, 2008
2007 Employee, Director and Consultant Stock Plan
Any fiscal year
Jun. 30, 2012
2007 Employee, Director and Consultant Stock Plan equity compensation plan
Jun. 30, 2012
Stock Option Plan 2011
May 23, 2012
Stock Option Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Individual Grant Limits 500,000              
Shares reserved for future issuance               4,000,000
Number of shares available for issuance             41,667  
Maximum number of shares or equivalents of common stock that may be granted   7,000,000 3,000,000   1,100,000      
Option plan, term       10 years        
Total unrecognized compensation cost related to nonvested share based compensation           $ 0