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Employee Retirement Plan (Notes)	12 Months Ended
Employee Retirement Plan (Notes)	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Employee Retirement Plan	Employee Retirement Plan We have 401(k) retirement plans under which employees may contribute up to 100% of their annual salary, within IRS limits. The Company contributions to the retirement plans totaled $0.2 million for each of the years ended December 31, 2014, 2013, and 2012.

The entire disclosure for pension and other postretirement benefits.