Licensing Agreements and Research Contracts - Additional Information (Detail) (USD $)		3 Months Ended		12 Months Ended			83 Months Ended	0 Months Ended		3 Months Ended		12 Months Ended			0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013 Licensing Agreements [Member]	Mar. 31, 2012 Licensing Agreements [Member]	Mar. 31, 2014 Licensing Agreements [Member]	Dec. 31, 2012 Licensing Agreements [Member]	Dec. 31, 2011 Licensing Agreements [Member]	Mar. 31, 2014 Licensing Agreements [Member]	Mar. 12, 2010 University of Missouri [Member]	Mar. 24, 2009 University of Missouri [Member]	Mar. 31, 2014 University of Missouri [Member]	Mar. 31, 2013 University of Missouri [Member]	Dec. 31, 2012 University of Missouri [Member]	Dec. 31, 2011 University of Missouri [Member]	Mar. 31, 2014 Clemson University [Member]	May 02, 2011 Clemson University [Member] Licensing Agreements [Member]	May 02, 2011 Clemson University [Member] Licensing Agreements [Member] Minimum [Member]	May 02, 2011 Clemson University [Member] Licensing Agreements [Member] Maximum [Member]	May 02, 2011 Clemson University [Member] Licensing Agreements [Member] Other Assets [Member]	Feb. 28, 2013 Becton Dickinson [Member]
Finite-Lived Intangible Assets [Line Items]
License cost								$ 5,000	$ 25,000						$ 32,500
Royalty fees percentage minimum								1.00%	1.00%						1.50%
Royalty fees percentage maximum								3.00%	3.00%						3.00%
Annual royalty								5,000	25,000							20,000	40,000
Other assets amortized		97,000		89,000	80,000		89,000	5,000	25,000									65,000
Expected expiration year of license agreement									2029
Prior patent costs relating to the license agreements										0	0	193,500	23,800
Additional royalty								12,500
Royalty payment											0
Additional license fee to reimburse future patent costs															32,500
Expected expiration year of license agreement															2024-05
Initial royalty payment due	4,000
Annual royalty payment due										30,000				20,000
Payments to purchase exclusive rights to intellectual property																			18,500
Amortization expense of licenses		2,000	1,700	8,500	7,000	5,200	25,200
Weighted average remaining amortization period for all licenses				11 years
Annual amortization expense of licenses year 1				8,500			8,500
Annual amortization expense of licenses year 2				8,500			8,500
Annual amortization expense of licenses year 3				8,500			8,500
Annual amortization expense of licenses year 4				8,500			8,500
Annual amortization expense of licenses year 5				$ 8,500			$ 8,500