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Employee Benefits	12 Months Ended
Employee Benefits	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Benefits	Employee Benefits We offer a 401(k) retirement plan, which is a defined contribution retirement plan, for eligible employees. Employees are eligible to participate on the first day of service. Under the terms of the plan, employees are entitled to contribute from 1% to 100% of their total compensation, within limitations established by the Internal Revenue Code. We match 100% of the first 6% of each employee’s contribution and may also contribute additional amounts at our discretion, all subject to immediate vesting. The cost of employer contributions to the plan was $3.3 million, $2.9 million, and $2.5 million for the years ended December 31, 2015, 2014, and 2013, respectively.