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Finance costs (Tables) | 12 Months Ended
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Dec. 31, 2019
Finance Costs [Abstract] |
Schedule of finance costs |
|  | 2019 |  |  | 2018
Interest on long-term debt | $ | 63,136 |  | $ | 73,039
Unwinding of discount on provisions [note 15] |  | 20,789 |  |  | 23,681
Other charges |  | 14,697 |  |  | 15,059
Total | $ | 98,622 |  | $ | 111,779

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