Goodwill - Additional Information (Details) $ in Thousands	Dec. 31, 2019 CAD ($)
Disclosure Of Reconciliation Of Changes In Goodwill [Line Items]
Goodwill impairment	$ (11,440)
Accumulated impairment [member]
Disclosure Of Reconciliation Of Changes In Goodwill [Line Items]
Goodwill impairment	$ 100,300

The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant