Employee Savings Plan

12 Months Ended

Dec. 31, 2015

Employee Savings Plan

Employee Savings Plan

10.   Employee Savings Plan

        We sponsor a defined contribution plan that qualifies under Section 401(k) of the IRC to provide retirement benefits to substantially all of our employees. As allowed under Section 401(k), the plan provides tax-deferred salary deductions for eligible employees. Our matching contributions to the plan for the years ended December 31, 2015, 2014 and 2013 were $6.6 million, $6.4 million and $5.1 million, respectively.