INCOME TAXES (Details) - CAD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate (as a percent)	7.90%	19.10%	10.20%	18.30%
Provisional tax expense	$ 0		$ 0