19. TRADE AND OTHER PAYABLES
| As at December 31, | 2017 | 2016 | ||||||
| Trade payables | $ | 2,659 | $ | 2,502 | ||||
| Other payables and accrued liabilities (a) | 35,260 | 41,605 | ||||||
| Trade and other payables | $ | 37,919 | $ | 44,107 | ||||
| (a) | Other payables and accrued liabilities included payables that are not trade in nature as well as various operating and capital accruals. |