Financial Instruments - Summary of Analysis of Age of Trade Payables (Detail) - Liquidity risk [member] - CAD ($)
$ in Thousands |
Dec. 31, 2017 |
Dec. 31, 2016 |
| Disclosure of detailed information about financial instruments [line items] |
|
|
| Analysis of the age of trade payables |
$ 7,076
|
$ 586
|
| Current [member] |
|
|
| Disclosure of detailed information about financial instruments [line items] |
|
|
| Analysis of the age of trade payables |
5,922
|
147
|
| Less than 30 days past billing date [member] |
|
|
| Disclosure of detailed information about financial instruments [line items] |
|
|
| Analysis of the age of trade payables |
803
|
150
|
| 31 to 60 days past billing date [member] |
|
|
| Disclosure of detailed information about financial instruments [line items] |
|
|
| Analysis of the age of trade payables |
113
|
33
|
| 61 to 90 days past billing date [member] |
|
|
| Disclosure of detailed information about financial instruments [line items] |
|
|
| Analysis of the age of trade payables |
66
|
16
|
| Over 90 days past billing date [member] |
|
|
| Disclosure of detailed information about financial instruments [line items] |
|
|
| Analysis of the age of trade payables |
$ 172
|
$ 240
|