Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan (Notes)

Employee Benefit Plan (Notes)
12 Months Ended
Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Employee Benefit Plan

In 2005, we established a defined contribution plan (“401(k) Plan”). The 401(k) Plan 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. Effective January 1, 2007, employees are immediately vested in the contributions made by us. Our contributions to the 401(k) Plan were $3.6 million, $2.3 million and $1.4 million for the years ended December 31, 2014, 2013 and 2012, respectively. We have made no discretionary contributions to the 401(k) Plan to date.