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Estimated Future Amortization Expense (Detail) (USD $)
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
2015 $ 162,422us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2016 160,948us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2017 159,347us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2018 148,649us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2019 135,775us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Thereafter 580,753us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Total $ 1,347,894us-gaap_FiniteLivedIntangibleAssetsNet