Leases - Future Minimum Lease Payments Under Operating Leases (Detail) (USD $)	Jun. 30, 2013
Operating Leased Assets [Line Items]
2013	$ 94,661
2014	434,229
2015	445,921
2016	457,961
2017	470,154
2018	359,370
2019 and thereafter	125,415
Total	$ 2,387,711