Quarterly report pursuant to Section 13 or 15(d)

Commitments and contingencies - Schedule of Future Minimum Rental Payments for Operating Leases (Details)

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Commitments and contingencies - Schedule of Future Minimum Rental Payments for Operating Leases (Details) (USD $)
Mar. 31, 2014
Future minimum lease payments under all non-cancelable operating leases  
2014 $ 152,434
2015 571,349
2016 521,400
2017 516,640
2018 499,122
2019 and thereafter 2,742,217
Total $ 5,003,162