Employee Benefit Plan	12 Months Ended
Dec. 31, 2012
Employee Benefit Plan	12. Employee Benefit Plan U.S. employees are eligible to participate in the Company’s 401(k) savings plan. Employees may elect to contribute a percentage of their compensation to the plan, and the Company will make matching contributions up to a limit of 5% of an employee’s compensation. In addition, the Company may make annual discretionary contributions. For the years ended December 31, 2012, 2011, and 2010, the Company made matching contributions of $326,007, $279,816 and $291,107 respectively.

Employee Benefit Plan

12 Months Ended

Dec. 31, 2012

12. Employee Benefit Plan

U.S. employees are eligible to participate in the Company’s 401(k) savings plan. Employees may elect to contribute a percentage of their compensation to the plan, and the Company will make matching contributions up to a limit of 5% of an employee’s compensation. In addition, the Company may make annual discretionary contributions. For the years ended December 31, 2012, 2011, and 2010, the Company made matching contributions of $326,007, $279,816 and $291,107 respectively.