Commitments and Contingencies - Additional Information (Detail) (USD $)	Sep. 30, 2013
Commitments and Contingencies [Line Items]
2014	$ 1,800,000
2015	2,100,000
2016	2,700,000
2017	3,200,000
2018	3,800,000
Minimum royalty payments total	450,000
Debt instrument unamortized discount	$ 14,179