Property and Equipment (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Property, equipment and depreciation and amortization
Property and equipment, gross	$ 5,600,352	$ 5,588,900
Less—accumulated depreciation and amortization	(2,033,288)	(1,761,985)
Property and equipment, net	3,567,064	3,826,915
Furniture and office equipment
Property, equipment and depreciation and amortization
Property and equipment, gross	1,144,741	1,144,741
Leasehold improvements
Property, equipment and depreciation and amortization
Property and equipment, gross	1,994,514	1,994,514
Laboratory equipment
Property, equipment and depreciation and amortization
Property and equipment, gross	$ 2,461,097	$ 2,449,645