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Commitments and Contingencies - Future Minimum Lease Payments Under Capitalized Leases (Detail) (USD $)
Dec. 31, 2014
Sep. 30, 2014
Leases [Abstract]    
2015 (remainder of) $ 171,315us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent  
2016 228,420us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears  
2017 228,420us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears  
2018 228,420us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears  
2019 95,178us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears  
Less interest (32,589)us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments  
Principal 919,164us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments  
Less current portion (213,991)us-gaap_CapitalLeaseObligationsCurrent (213,991)us-gaap_CapitalLeaseObligationsCurrent
Noncurrent portion $ 705,173us-gaap_CapitalLeaseObligationsNoncurrent $ 758,340us-gaap_CapitalLeaseObligationsNoncurrent