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Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2016
Employee Benefit Plans [Abstract]
Employee Benefit Plans	12. Employee Benefit Plans The Company sponsors a defined contribution plan under which it may make discretionary contributions. The Company did not make any employer matching contributions to this plan during the years ended December 31, 2016, 2015 or the period from May 19, 2014 (inception) through December 31, 2014.