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Defined Contribution Retirement Plan	12 Months Ended
Defined Contribution Retirement Plan	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Defined Contribution Retirement Plan	13. Defined Contribution Retirement Plan The Company maintains a 401(k) defined contribution retirement plan covering substantially all of its employees. The plan provides for matching and discretionary contributions by the Company. Contributions were $0.4 million, $0 and $0 for the years ended December 31, 2014, 2013 and 2012, respectively.

The entire disclosure for pension and other postretirement benefits.