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Debt - Costs Associated With Loans Outstanding (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Debt Disclosure [Abstract]    
Interest expense $ 87,426us-gaap_InterestExpenseDebtExcludingAmortization $ 189,151us-gaap_InterestExpenseDebtExcludingAmortization
Amortization of transaction costs 8,803us-gaap_AmortizationOfFinancingCosts 18,387us-gaap_AmortizationOfFinancingCosts
Total interest expense $ 96,229us-gaap_InterestExpenseDebt $ 207,538us-gaap_InterestExpenseDebt