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Change in Provisions and Other (Detail) - CAD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Other Provisions [Abstract]
Beginning balance	$ 13,373	$ 13,232
Expensed during the year	4,047	3,359
Payment of deductibles and uninsured claims	(4,915)	(4,271)
Effects of foreign currency exchange differences	(639)	1,053
Ending balance	$ 11,866	$ 13,373

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- Definition

The increase in existing other provisions. [Refer: Other provisions]

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- Definition

The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]

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- Definition

The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

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The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]

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