Income Taxes - Reconciliation of Combined Canadian Federal and Provincial Statutory Income Tax Rate to Effective Tax Rate (Detail) - CAD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Income Tax (Expense) Benefits [abstract] | ||
| Income before income taxes | $ 2,789 | $ (1,758) |
| Combined statutory tax rate | 26.50% | 26.50% |
| Theoretical tax expense (recovery) | $ 739 | $ (466) |
| Stock-based payments | 494 | 81 |
| Non-taxable portion of capital gains | (762) | |
| Effect of provincial tax rate difference | 5 | 4 |
| Changes in unrecognized deferred tax assets | (178) | (187) |
| Income tax expense (recovery) | $ 298 | $ (568) |