v3.22.4
Income taxes - Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Income Taxes [Abstract]    
Net loss before income taxes (from continuing operations) $ (177,030) $ (114,613)
Expected Tax Recovery 27.00% 27.00%
Expected tax recovery at 27.00% (2021 – 27.00% ) $ (47,798) $ (30,945)
Non-deductible expenses (non-taxable income) 13,865 6,330
Expiry of losses and ITC 1,515 64
Investment tax credits earned (3,782) (3,677)
Foreign tax rate and tax rate differences 4,884 3,341
Change in unrecognized deductible temporary differences 27,777 24,651
Other 3 20
Total income tax expense (recovery) from continuing operations $ (3,536) $ (216)