Summary of Operating Segments by Geographic Locations (Detail) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Disclosure of geographical areas [Line Items]
Revenue	$ 1,321,224	$ 1,003,233
Total assets	3,892,931	4,324,214
Canada [member]
Disclosure of geographical areas [Line Items]
Revenue	578,817	418,030
Total assets	1,631,838	1,738,853
United States [Member]
Disclosure of geographical areas [Line Items]
Revenue	568,573	426,546
Total assets	1,666,368	1,861,908
International [Member]
Disclosure of geographical areas [Line Items]
Revenue	190,401	169,286
Total assets	594,725	723,453
Inter- Segment Eliminations [Member]
Disclosure of geographical areas [Line Items]
Revenue	$ (16,567)	$ (10,629)

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.

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+ Details