Employee Retirement Plan - Additional Information (Details) (USD $)
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12 Months Ended | |
---|---|---|
Dec. 31, 2014
Age
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Dec. 31, 2013
|
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Compensation And Retirement Disclosure [Abstract] | ||
Employers contributions to defined contribution plan | $ 0 | $ 0 |
Employees eligibility age to participate in retirement plan | 21 |