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Summary of Deferred Tax Asset Not Recognized (Detail) - CAD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Abstract]
Tax losses (Capital)	$ 29,809	$ 31,033
Tax losses (Income)	72,516	33,221
Deductible temporary differences	2,020
Total	$ 104,345	$ 64,254

X

- Definition

The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]]

+ References

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- Definition

The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]]

+ References

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- Definition

The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]]

+ References

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Unrecognized deferred tax assets.

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