Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan

Employee Benefit Plan
12 Months Ended
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]  
Employee Benefit Plan

We have a defined contribution plan (“401(k) Plan”) which allows eligible employees to contribute up to 100% of their compensation up to the IRS maximum. We match each employee’s salary deferrals (contributions) up to six percent of compensation and may make additional contributions at our discretion. Employees are immediately vested in the contributions made by us. Our contributions to the 401(k) Plan were $4.9 million, $3.6 million and $2.3 million for the years ended December 31, 2015, 2014 and 2013, respectively. We have made no discretionary contributions to the 401(k) Plan to date.