Fixed Assets (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Fixed Assets [Line Items]
Computer Software, Computer Equipment and Office Equipment Useful Life	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 Gross	$ 314,717	$ 314,717
Laboratory Equipment Gross	1,225,770	1,220,770
Furniture and Fixtures, Gross	40,349	40,349
Leasehold Improvements, Gross	303,258	303,258
Website Development Gross	270,678	270,678
Capital Leased Assets, Gross	22,920	22,920
Property, Plant and Equipment, Gross	2,177,692	2,172,692
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(2,050,746)	(1,883,681)
Property, Plant and Equipment, Net	$ 126,946	$ 289,011
Minimum [Member]
Fixed Assets [Line Items]
Equipment Under Capital Leases Useful Life	3 years
Maximum [Member]
Fixed Assets [Line Items]
Equipment Under Capital Leases Useful Life	5 years