401(k) Plan	12 Months Ended
Dec. 31, 2015
401(k) Plan
401(k) Plan	15. 401(k) Plan The Company has a defined contribution 401(k) plan available to eligible employees. Employee contributions are voluntary and are determined on an individual basis, limited by the maximum amounts allowable under federal tax regulations. The Company has discretion to make contributions to the plan. In March 2005, the Company's Board of Directors approved a match of 50% of the first 6% contributed by employees, effective for the 2004 plan year and thereafter. The Company recorded $0.9 million, $0.9 million and $0.8 million of such match expense in the years ended December 31, 2015, 2014 and 2013, respectively.

401(k) Plan

12 Months Ended

Dec. 31, 2015

15. 401(k) Plan

The Company has a defined contribution 401(k) plan available to eligible employees. Employee contributions are voluntary and are determined on an individual basis, limited by the maximum amounts allowable under federal tax regulations. The Company has discretion to make contributions to the plan. In March 2005, the Company's Board of Directors approved a match of 50% of the first 6% contributed by employees, effective for the 2004 plan year and thereafter. The Company recorded $0.9 million, $0.9 million and $0.8 million of such match expense in the years ended December 31, 2015, 2014 and 2013, respectively.