Property, Plant and Equipment - Summary of Property Plant and Equipment (Detail) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance $ 14,122 $ 2,699
Additions 43,046  
Ending Balance 56,172 14,122
Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 528 146
Additions 996 382
Ending Balance 1,524 528
Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 14,650 2,845
Additions 43,046 1,523
Acquisitions   10,282
Ending Balance 57,696 14,650
Building structures [member] | Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 120 63
Additions 313 57
Ending Balance 433 120
Building structures [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 2,761 824
Additions 8,757 62
Acquisitions   1,875
Ending Balance 11,518 2,761
Furniture and equipment [member] | Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 18 8
Additions 25 10
Ending Balance 43 18
Furniture and equipment [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 63 27
Additions 71  
Acquisitions   36
Ending Balance 134 63
Computer equipment [member] | Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 36 12
Additions 39 24
Ending Balance 75 36
Computer equipment [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 88 29
Additions 60 38
Acquisitions   21
Ending Balance 148 88
Security equipment [member] | Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 60 9
Additions 136 51
Ending Balance 196 60
Security equipment [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 474 183
Additions 412 291
Ending Balance 886 474
Production equipment [member] | Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 103 14
Additions 328 89
Ending Balance 431 103
Production equipment [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 2,106 72
Additions 375 409
Acquisitions   1,625
Ending Balance 2,481 2,106
Road [member] | Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 5  
Additions 5 5
Ending Balance 10 5
Road [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 137 137
Ending Balance 137 137
Leasehold improvements [member] | Accumulated depreciation [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 186 40
Additions 150 146
Ending Balance 336 186
Leasehold improvements [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 1,429 1,363
Additions 68 66
Ending Balance 1,497 1,429
Land [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 1,558 210
Additions   623
Acquisitions   725
Ending Balance 1,558 1,558
Construction in progress [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning Balance 6,034  
Additions 33,303 34
Acquisitions   6,000
Ending Balance $ 39,337 $ 6,034