Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Intangible Assets Net Excluding Goodwill [Abstract]
Intangible assets not subject to amortization, beginning balance			$ 944,935
Intangible assets not subject to amortization, ending balance	$ 944,935		944,935
Intangible assets subject to amortization, beginning balance			23,879,181
Intangible assets subject to amortization, Amortization	(425,107)	$ (155,366)	(864,099)	$ (169,030)
Intangible assets subject to amortization, ending balance	23,015,082		23,015,082
Total Intangible assets, beginning balance			24,824,116
Total Intangible assets, ending balance	$ 23,960,017		$ 23,960,017