Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($)	6 Months Ended	7 Months Ended
	Jun. 30, 2016	Jul. 31, 2015
Stock-Based Compensation
Stock-based compensation	$ 1,576,538
Research and Development
Stock-Based Compensation
Stock-based compensation	623,651
General and Administrative
Stock-Based Compensation
Stock-based compensation	952,887
Stock options
Stock-Based Compensation
Stock-based compensation	1,456,618	$ 0
Stock options | Research and Development
Stock-Based Compensation
Stock-based compensation	558,922
Stock options | General and Administrative
Stock-Based Compensation
Stock-based compensation	897,696
Restricted stock
Stock-Based Compensation
Stock-based compensation	119,920	$ 0
Restricted stock | Research and Development
Stock-Based Compensation
Stock-based compensation	64,729
Restricted stock | General and Administrative
Stock-Based Compensation
Stock-based compensation	$ 55,191