Basis of Presentation - Additional Information (Details) - CAD ($) $ in Thousands		3 Months Ended
	Mar. 31, 2022	Jun. 30, 2022	Sep. 30, 2022
Basis Of Presentation [Line Items]
Long-term debt	$ 563,958		$ 321,128
Accumulated deficit	$ (6,370,337)		$ (8,676,020)
Accounting Standards Update [Extensible Enumeration]	us-gaap:AccountingStandardsUpdate202006Member	us-gaap:AccountingStandardsUpdate202006Member
Cumulative effect from adoption of ASU 2020-06
Basis Of Presentation [Line Items]
Additional paid in capital	$ 4,452
Long-term debt	3,723
Accumulated deficit	$ 729