Summary of Operating Segments by Geographic Locations (Detail) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Disclosure of geographical areas [Line Items]
Revenue	$ 1,541,320	$ 1,541,189
Total assets	3,269,840	3,636,043
United States [Member]
Disclosure of geographical areas [Line Items]
Revenue	871,651	791,312
Total assets	1,560,523	1,772,850
Canada [Member]
Disclosure of geographical areas [Line Items]
Revenue	459,377	558,746
Total assets	1,133,591	1,269,542
International [Member]
Disclosure of geographical areas [Line Items]
Revenue	210,292	191,131
Total assets	$ 575,726	$ 593,651

Expiry date 2020-01-01: The amount of resources: (a) controlled by the entity as a result of past events; and (b) from which future economic benefits are expected to flow to the entity. Effective 2020-01-01: The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

Expiry date 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in an increase in equity, other than those relating to contributions from equity participants. Effective 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details