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Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($)
 3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
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  
Intangible assets subject to amortization, beginning balance 23,879,181  
Intangible assets subject to amortization, Amortization (438,991) $ (13,664)
Intangible assets subject to amortization, ending balance 23,440,190  
Total Intangible assets, beginning balance 24,824,116  
Total Intangible assets, ending balance $ 24,385,125