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Significant accounting policies - Summary of Depreciation is Calculated on a Straight-line, and the Assets (Detail)
 12 Months Ended
Dec. 31, 2021
Machinery and equipment  
Disclosure of detailed information about property, plant and equipment [line items]  
Class of Property and equipment 10 months
Computer equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Class of Property and equipment 5 months
Furniture and fixture  
Disclosure of detailed information about property, plant and equipment [line items]  
Class of Property and equipment 10 months
Leasehold Improvements | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Class of Property and equipment 2 months
Leasehold Improvements | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Class of Property and equipment 8 months