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Property and equipment (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Statement Line Items [Line Items]    
Beginning balance $ 8,202 $ 9,057
Additions 22 189
Disposals (2,906) (1,044)
Ending balance 5,318 8,202
ACCUMULATED DEPRECIATION    
Beginning balance 6,429 6,041
Depreciation 631 1,330
Disposals (2,634) (942)
Ending balance 4,426 6,429
Property and equipment 892 1,773
Computer equipment [Member]    
Statement Line Items [Line Items]    
Beginning balance 4,513 5,046
Additions 22 186
Disposals (2,452) (719)
Ending balance 2,083 4,513
ACCUMULATED DEPRECIATION    
Beginning balance 3,761 3,672
Depreciation 229 749
Disposals (2,443) (660)
Ending balance 1,547 3,761
Property and equipment 536 752
Furniture and fixtures [member]    
Statement Line Items [Line Items]    
Beginning balance 1,180 1,502
Additions   3
Disposals   (325)
Ending balance 1,180 1,180
ACCUMULATED DEPRECIATION    
Beginning balance 733 899
Depreciation 91 116
Disposals   (282)
Ending balance 824 733
Property and equipment 356 447
Leasehold improvements [Member]    
Statement Line Items [Line Items]    
Beginning balance 2,509 2,509
Disposals (454)  
Ending balance 2,055 2,509
ACCUMULATED DEPRECIATION    
Beginning balance 1,935 1,470
Depreciation 311 465
Disposals (191)  
Ending balance $ 2,055 1,935
Property and equipment   $ 574