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Income taxes (Details 1) (CAD)
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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|---|---|---|---|
| Tax benefit of capitalized mineral property costs | 13,068,000 | 11,978,000 | |
| Net operating loss carry forwards | 21,630,000 | 16,688,000 | |
| Less: valuation allowance | 0 | (34,698,000) | (28,666,000) |
| Deferred Tax Assets, Total | 0 | 0 | 0 |
| Asset basis differences | 0 | 0 | |
| Net deferred tax asset (future income tax liability) | 0 | 0 | 0 |
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from tax benefit of capitalized mineral property costs. No definition available.
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from assets basis. No definition available.
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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