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Current and future income taxes - Effective income tax differ statutory income tax (Details 2) (USD $)
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12 Months Ended | |
|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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| Schedule Of Effective Income Tax Rate Differs Statutory Income Tax Rate [Line Items] | ||
| Tax recovery at statutory income tax rates | $ (2,818,834) | $ (324,049) |
| Permanent differences | 979,359 | 133,365 |
| Effect of rate differentials between jurisdictions | 320,965 | |
| Other | 13,087 | |
| Effect of tax rate changes on future taxes | (305,647) | |
| Change in valuation allowance | 1,824,157 | 177,597 |
| Income tax expense benefit | ||