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Intangible assets, net (Details) - Mar. 31, 2014 - USD ($)
Total
Finite-Lived Intangible Assets [Line Items]  
Gross carrying value $ 2,618,027
Accumulated amortization 1,266,657
Impairment loss 1,351,370
Net carrying value 0
Customer Contracts [Member]  
Finite-Lived Intangible Assets [Line Items]  
Gross carrying value 12,383
Accumulated amortization 12,383
Impairment loss 0
Net carrying value 0
Intellectual Property [Member]  
Finite-Lived Intangible Assets [Line Items]  
Gross carrying value 2,605,644
Accumulated amortization 1,254,274
Impairment loss 1,351,370
Net carrying value $ 0