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Leases - Future Minimum Lease Payments under Operating Leases (Detail) (USD $)
Jun. 30, 2014
Operating Leased Assets [Line Items]  
2014 (remainder of) $ 134,164
2015 580,626
2016 597,196
2017 613,984
2018 638,217
2019 and thereafter 432,861
Total $ 2,997,048