Share Capital and Reserves - Summary of Warrants Outstanding (Detail) - $ / shares
|
12 Months Ended |
|
|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Disclosure of terms and conditions of share-based payment arrangement [line items] |
|
|
|
| Number of warrants outstanding |
38,654,654
|
45,885,172
|
15,795,422
|
| Exercise price |
$ 0.242
|
|
|
| Warrants grant date Eighteen January 2013 [member] |
|
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] |
|
|
|
| Number of warrants outstanding |
2,981,476
|
|
|
| Exercise price |
$ 0.080
|
|
|
| Expiry |
January 18, 2018
|
|
|
| Warrants grant date Eight October 2015 [member] |
|
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] |
|
|
|
| Number of warrants outstanding |
4,101,680
|
|
|
| Exercise price |
$ 0.310
|
|
|
| Expiry |
October 8, 2020
|
|
|
| Warrants grant date Twenty Three October 2015 [Member] |
|
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] |
|
|
|
| Number of warrants outstanding |
1,478,245
|
|
|
| Exercise price |
$ 0.310
|
|
|
| Expiry |
October 23, 2020
|
|
|
| Warrants grant date twenty eight October 2015 [member] |
|
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] |
|
|
|
| Number of warrants outstanding |
9,548
|
|
|
| Exercise price |
$ 0.310
|
|
|
| Expiry |
October 28, 2020
|
|
|
| Warrants grant date thirteen May 2016 [member] |
|
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] |
|
|
|
| Number of warrants outstanding |
8,510,812
|
|
|
| Exercise price |
$ 0.245
|
|
|
| Expiry |
May 13, 2021
|
|
|
| Warrants grant date twenty seven May 2016 [member] |
|
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] |
|
|
|
| Number of warrants outstanding |
21,572,893
|
|
|
| Exercise price |
$ 0.245
|
|
|
| Expiry |
May 27, 2021
|
|
|