| | | | Carrying | | | | | |
$000 | | | | amount | | Fair Value | | ||
As at December 31, 2017 | | | | | | | | | |
Categorized as level 1¹ | | | | | | | | | |
Available-for-sale financial asset | | Available for sale | | | 26 | | | 26 | |
| | | | | | | | | |
As at December 31, 2016 | | | | | | | | | |
Categorized as level 1¹ | | | | | | | | | |
Available-for-sale financial asset | | Available for sale | | | 58 | | | 58 | |
| | | | | | | | | |
As at December 31, 2015 | | | | | | | | | |
Categorized as level 1¹ | | | | | | | | | |
Available-for-sale financial asset | | Available for sale | | | 45 | | | 45 | |