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Other long term obligations (Tables) | 12 Months Ended
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Dec. 31, 2019
Other Liabilities Disclosure [Abstract] |
Schedule of other long term obligations |
| Note |  | December 31, 2019 |  |  | December 31, 2018 |
Directors' deferred stock unit plan | 18(c) |  | $ | 14,375 |  |  | $ | 13,413 |
Deferred gain on sale-leaseback | 14(a) |  | 6,593 |  |  | 8,438 |
Other |  |  | 3,536 |  |  | 2,353 |
Deferred lease inducements liability |  |  | — |  |  | 1,419 |
|  |  | $ | 24,504 |  |  | $ | 25,623 |
Schedule of deferred gain on sale-leaseback |
|  | December 31, 2019 |  |  | December 31, 2018 |
Balance, beginning of year |  | $ | 8,438 |  |  | $ | 7,654 |
Addition |  | — |  |  | 2,262 |
Amortization of deferred gain on sale-leaseback |  | (1,845 | ) |  | (1,478 | )
Balance, end of year |  | $ | 6,593 |  |  | $ | 8,438 |

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