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Income taxes (Details 1) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|---|
| Capital assets and mineral properties | $ 8,337 | $ 14,301 | $ 11,745 |
| Net operating loss carry forwards | 39,432 | 24,579 | 16,363 |
| Less: valuation allowance | (47,769) | (38,880) | (28,108) |
| Deferred Tax Assets, Total | 0 | 0 | 0 |
| Mineral properties | (3,345) | 0 | |
| Net deferred tax asset (liability) | $ (3,345) | $ 0 | $ 0 |
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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 before 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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- 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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- 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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- 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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- 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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