Property, Plant and Equipment - Additional Information (Detail) - CAD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Disclosure - Property, Plant and Equipment - Additional Information [Abstract] | ||
| Non-cash additions from capitalization | $ 345,000 | $ 0 |
| Transferred out of construction in progress to building structures | 6,034,000 | 0 |
| Depreciation expense is recorded as part of inventory expensed to cost of sales, production costs, and general and administration | $ 455,000 | $ 0 |