Fixed Assets (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Computer software, computer equipment and office equipment	3 years
Laboratory equipment, Useful Life	5 years
Furniture and fixtures, Useful Life	5 years
Leasehold improvements, Useful Life	5 years
Website development, Useful Life	3 years
Computer software, computer equipment and office equipment	$ 516,511	$ 477,222
Laboratory equipment	1,887,454	1,837,504
Furniture and fixtures	40,349	40,349
Leasehold improvements	309,618	309,618
Website development	298,553	298,553
Projects in progress	0	6,750
Property, Plant and Equipment, Gross	3,052,485	2,969,996
Less — Accumulated depreciation and amortization	(2,408,585)	(2,196,217)
Total	$ 643,900	$ 773,779