Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Basis of preparation - Major Categories of Property and Equipment (Details)

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Basis of preparation - Major Categories of Property and Equipment (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Disclosure of detailed information about property, plant and equipment [line items]  
Cost of inventories purchased during period $ 6,620
Computer equipment and software  
Disclosure of detailed information about property, plant and equipment [line items]  
Property and equipment, useful lives 3 years
Office equipment and furniture  
Disclosure of detailed information about property, plant and equipment [line items]  
Property and equipment, useful lives 5 years
Purchased intellectual property and reacquired rights | Bottom of range  
Disclosure of detailed information about property, plant and equipment [line items]  
Acquired finite-lived intangible assets, weighted average useful life 10 years
Purchased intellectual property and reacquired rights | Top of range  
Disclosure of detailed information about property, plant and equipment [line items]  
Acquired finite-lived intangible assets, weighted average useful life 20 years