Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012 Agreement	Dec. 31, 2011
Commitments And Contingencies [Line Items]
Number of Agreements			5
Milestone payment & royalties	$ 0		$ 0	$ 0
Unconditional purchase obligation		1,024,477
Upfront payment	82,983
Capital lease monthly payment		7,616
Capital lease term	36 months
Debt instrument, periodic payment		78,125	52,410
Impairment loss		105,491
Gross cost and carrying value adjustment		87,468
Debt instrument, periodic payment, interest		20,827	23,708
Accumulated depreciation for leased equipment		0	50,779
Operating lease year of start		2014
Operating lease year of end		2019
Operating leases, rent expense		511,029	459,150	396,667
Scientific Equipment [Member]
Commitments And Contingencies [Line Items]
Capital lease obligations	$ 304,673			$ 304,673