Employee Benefit Plan

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plan

Employee Benefits

The Company maintains a 401(k) benefit plan available to all employees who are 21 years of age or older and have completed six months of service. Under the plan, the Company has the option to match employee discretionary contributions up to 3% of an employee’s compensation. Employees’ rights to employer contributions vest after five years from their date of employment.

For the years ended December 31, 2014, 2013 and 2012, the Company’s employee benefits expense for matching contributions was approximately $4.7 million, $5.5 million and $5.6 million, respectively. As of December 31, 2014 and 2013, the Company owed $4.9 million and $4.4 million in matching contributions, respectively, to the plan in respect of such matching contributions.