Financial Instruments - Additional Information (Detail) - Credit risk [member] $ in Thousands |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2017
CAD ($)
Customer
|
Dec. 31, 2016
CAD ($)
Customer
|
|
| Disclosure of detailed information about financial instruments [line items] | ||
| Loans receivable | $ 314 | $ 309 |
| Accounts receivable | $ 1,140 | $ 107 |
| Percentages of receivables | 1.40% | 1.00% |
| Trade receivables [member] | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Percentage Of Trade Receivable | 89.30% | 27.50% |
| Number Of Customers | Customer | 2 | 1 |