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Leases - Future Minimum Lease Payments Under Operating Leases (Detail) (USD $)	Dec. 31, 2012
Future Minimum Lease Payments Under Capital Leases And Operating Leases For Continuing Operations [Line Items]
2013	$ 270,056
2014	434,229
2015	445,921
2016	457,961
2017	470,154
2018	359,370
2019 and thereafter	125,415
Total	$ 2,563,106

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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