Income Taxes - Summary of Unused Non-capital and Farm Losses (Detail) - Unused tax losses [member]
$ in Thousands |
12 Months Ended |
|
Dec. 31, 2017
CAD ($)
|
|---|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
$ 29,283
|
| 2030 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
32
|
| 2031 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
22
|
| 2032 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
877
|
| 2033 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
3,177
|
| 2034 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
1,782
|
| 2035 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
5,452
|
| 2036 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
6,558
|
| 2037 [member] |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
|
| Unused non-capital and farm losses |
$ 11,383
|