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Income taxes (Details 2) (USD $)
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Income Taxes Details 2    
Federal income tax benefit, net of state $ (234,197)us-gaap_DeferredFederalIncomeTaxExpenseBenefit $ (3,551,149)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State income tax benefit (66,796)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit   
Valuation allowance 300,993us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 3,551,149us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Income Tax Provision