Benefit Plans	12 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]
Benefit Plans	Benefit Plans The Company has a 401(k) retirement savings plan, which covers substantially all employees. Employees may voluntarily contribute up to 60% of their compensation, as defined, to the plan. Effective June 1, 2000, the Company adopted a company matching contribution to the 401(k) plan. The Company matched the employee contribution at a rate of 50% of the first 6% of compensation contributed to the plan. Company contributions to the plans were $0.8 million, $0.8 million and $1.4 million, during 2017, 2016 and 2015, respectively.

Benefit Plans

12 Months Ended

Dec. 31, 2017

The Company has a 401(k) retirement savings plan, which covers substantially all employees. Employees may voluntarily contribute up to 60% of their compensation, as defined, to the plan. Effective June 1, 2000, the Company adopted a company matching contribution to the 401(k) plan. The Company matched the employee contribution at a rate of 50% of the first 6% of compensation contributed to the plan. Company contributions to the plans were $0.8 million, $0.8 million and $1.4 million, during 2017, 2016 and 2015, respectively.