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Income taxes (Details Textual) (CAD)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2011
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| Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 47.8 | |
| Operating Loss Carryforwards, Expiration Dates | 2017 through 2032 | 2014 through 2032 |
| Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 19.9 | |
| Percentage Of Likelihood Realized Upon Settlement | 50.00% | |
| X | ||||||||||
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- Definition
The tax position that has been subsequently be measured as the largest amount of tax benefit that has a greater than the specified percentage of likelihood which is being realized upon ultimate settlement with the tax authority. No definition available.
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss 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 foreign operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The expiration date of each operating loss carryforward included in total operating loss carryforwards, or the applicable range of such expiration dates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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