Defined Contribution Plan

12 Months Ended

Dec. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Defined Contribution Plan

Defined Contribution Plan

In 2009, we established an employee 401(k) salary deferral plan (“401(k) Plan”) covering all eligible employees. Active employees who are at least 18 years old and are not otherwise disqualified under the terms of the 401(k) Plan are eligible to participate. Employees may contribute up to 50% of their compensation per year (subject to a maximum limit prescribed by federal tax law). Under the 401(k) Plan, we may elect to match a discretionary percentage of employee contributions. We have elected to match 25% of employees’ contributions up to 6% of the employees’ eligible salary. We made $0.2 million in matching contributions for the year ended December 31, 2016 and $0.1 million for each of the years ended December 31, 2015 and 2014.