Commitments and Contingencies - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended		1 Months Ended
	Aug. 15, 2013 sqft	Oct. 31, 2005	Dec. 31, 2014	Dec. 31, 2013	Oct. 31, 2014	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Loss Contingencies [Line Items]
Area under lease	4,419
Term of lease period from lease commencement date	36 months
Security deposit	$ 9,231
Lease base rent payment	9,678
Lease rent payment for second year	10,016
Lease rent payment for third year	10,367
Rent expense in continuing operations			149,371	435,573
Technology transaction fees		4,000,000
Milestone payment required as a sale of product		10,000,000
Future royalty percentage on net sales		5.00%
Royalties to net sales of other product		4.00%
Agreement amended canceled notice period		60 days
Annual royalty fee under agreement		2.00%
Minimum annual royalty fee current								100,000
Minimum annual royalty fee current in two years							100,000
Minimum annual royalty fee current in three years						150,000
Minimum annual royalty fee current in four years				150,000
Minimum annual royalty fee current in five years			200,000
Minimum annual royalty fee current, thereafter			200,000
Biorasi LLC [Member]
Loss Contingencies [Line Items]
Complaint filed seeking payments related to clinical trial					500,000
New York University [Member] | March 1997 License Agreement [Member]
Loss Contingencies [Line Items]
Technology transaction fees		50,000
Milestone payment required as a sale of product		1,800,000
Future royalty percentage on net sales		3.00%
Annual royalty fee under agreement		3.00%
Minimum annual royalty fee current								100,000
Minimum annual royalty fee current in two years							100,000
Minimum annual royalty fee current in three years						150,000
Minimum annual royalty fee current in four years				150,000
Minimum annual royalty fee current in five years			200,000
Minimum annual royalty fee current, thereafter			$ 200,000