SUPPLEMENTAL DISCLOSURES - Consolidated Statement of Comprehensive Income (Loss) Presentation (Details) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Disclosure of defined benefit plans [line items]
Employee compensation	$ 27,134	$ 19,976
Production
Disclosure of defined benefit plans [line items]
Employee compensation	7,860	8,360
General and administrative
Disclosure of defined benefit plans [line items]
Employee compensation	$ 19,274	$ 11,616

The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

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