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Employee benefit plans (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure of defined benefit plans [abstract] |
Summary of defined benefit plans |
| December 31, 2020 |  | December 31, 2019
Employee benefit plan expense: |  |  |
Employee Benefit Plan | $ | 3,036 |  |  | $ | 2,778 |
Supplemental Pension Plan | (187) |  |  | (61) |
| $ | 2,849 |  |  | $ | 2,717 |
Actuarial losses recognized in the statement of other comprehensive income (loss) in the period, before tax | $ | (3,440) |  |  | $ | (6,361) |
Cumulative actuarial losses recognized in the statement of other comprehensive income (loss), before tax | $ | (29,639) |  |  | $ | (26,199) |
Summary of amounts recognised in the statement of financial position for all pension plans | The amounts recognized in the consolidated statement of financial position for all pension plans are determined as follows:
| December 31, 2020 |  | December 31, 2019
| Employee benefit plans | SERP | Total |  | Employee benefit plans | SERP | Total
Present value of obligations | $ | (21,974) |  | $ | (2,721) |  | $ | (24,695) |  |  | $ | (20,182) |  | $ | (18,366) |  | $ | (38,548) |
Fair value of plan assets | — |  | 8,470 |  | 8,470 |  |  | 1,958 |  | 24,610 |  | 26,568 |
Asset (liability) on statement of financial position | $ | (21,974) |  | $ | 5,749 |  | $ | (16,225) |  |  | $ | (18,224) |  | $ | 6,244 |  | $ | (11,980) |
Summary of movement in the defined benefit obligation over the year | The movement in the present value of the employee benefit obligations over the years is as follows:
| 2020 |  | 2019
| Employee benefit plans | SERP | Total |  | Employee benefit plans | SERP | Total
Balance at January 1, | $ | (20,182) |  | $ | (18,366) |  | $ | (38,548) |  |  | $ | (16,239) |  | $ | (37,075) |  | $ | (53,314) |
Current service cost | (2,446) |  | — |  | (2,446) |  |  | (2,181) |  | (172) |  | (2,353) |
Past service cost | — |  | — |  | — |  |  | — |  | (97) |  | (97) |
Interest cost | (639) |  | (547) |  | (1,186) |  |  | (669) |  | (1,447) |  | (2,116) |
Actuarial gain (loss) | (2,664) |  | 548 |  | (2,116) |  |  | (3,097) |  | (4,781) |  | (7,878) |
Assets distributed on settlement | 3,146 |  | 14,945 |  | 18,091 |  |  | — |  | 24,430 |  | 24,430 |
Benefit payments | 1,172 |  | 180 |  | 1,352 |  |  | 1,576 |  | 2,189 |  | 3,765 |
Exchange gain (loss) | (361) |  | 519 |  | 158 |  |  | 428 |  | (1,413) |  | (985) |
Balance at December 31, | $ | (21,974) |  | $ | (2,721) |  | $ | (24,695) |  |  | $ | (20,182) |  | $ | (18,366) |  | $ | (38,548) |
Summary of movement in the fair value of plan assets of the year | The movement in the fair value of plan assets over the years is as follows:
| 2020 |  | 2019
| Employee benefit plans | SERP | Total |  | Employee benefit plans | SERP | Total
At January 1, | $ | 1,958 |  | $ | 24,610 |  | $ | 26,568 |  |  | $ | 1,864 |  | $ | 46,195 |  | $ | 48,059 |
Interest income on plan assets | 42 |  | 736 |  | 778 |  |  | 72 |  | 1,809 |  | 1,881 |
Actuarial gain (loss) | 59 |  | (1,383) |  | (1,324) |  |  | 82 |  | 1,435 |  | 1,517 |
Contributions by employer | 1,281 |  | — |  | 1,281 |  |  | — |  | — |  | — |
Assets distributed on settlement | (3,141) |  | (14,945) |  | (18,086) |  |  | — |  | (24,430) |  | (24,430) |
Benefit payments | (138) |  | (180) |  | (318) |  |  | (152) |  | (2,189) |  | (2,341) |
Exchange gain (loss) | (61) |  | (368) |  | (429) |  |  | 92 |  | 1,790 |  | 1,882 |
At December 31, | $ | — |  | $ | 8,470 |  | $ | 8,470 |  |  | $ | 1,958 |  | $ | 24,610 |  | $ | 26,568 |
Summary of amounts recognised in the statements of operations | The amounts recognized in the consolidated statements of operations are as follows:
| 2020 |  | 2019
| Employee benefit plans | SERP | Total |  | Employee benefit plans | SERP | Total
Current service cost | $ | 2,446 |  | $ | — |  | $ | 2,446 |  |  | $ | 2,181 |  | $ | 172 |  | $ | 2,353 |
Interest cost | 639 |  | 547 |  | 1,186 |  |  | 669 |  | 1,447 |  | 2,116 |
Past service cost | — |  | — |  | — |  |  | — |  | 97 |  | 97 |
Loss on settlement | (5) |  | — |  | (5) |  |  | — |  | 32 |  | 32 |
Expected return on plan assets | (44) |  | (734) |  | (778) |  |  | (72) |  | (1,809) |  | (1,881) |
Employee benefit plans expense (recovery) | $ | 3,036 |  | $ | (187) |  | $ | 2,849 |  |  | $ | 2,778 |  | $ | (61) |  | $ | 2,717 |
Summary of principal actuarial assumptions | The principal actuarial assumptions used were as follows:
| 2020 |  | 2019
| Employee benefit plans |  | SERP |  | Employee benefit plans |  | SERP
| Greece | Turkey | Canada |  | Canada |  | Greece | Turkey | Canada |  | Canada
| % | % | % |  | % |  | % | % | % |  | %
Expected return on plan assets | — |  | — |  | 3.1 |  |  | 3.1 |  |  | — |  | — |  | 3.9 |  |  | 3.9 |
Discount rate - beginning of year | 0.9 |  | 13.0 |  | 3.1 |  |  | 3.1 |  |  | 1.7 |  | 15.0 |  | 3.9 |  |  | 3.9 |
Discount rate - end of year | 0.4 |  | 12.8 |  | — |  |  | 3.1 |  |  | 0.9 |  | 13.0 |  | 3.1 |  |  | 3.1 |
Rate of salary escalation | 1.7 |  | 8.5 |  | — |  |  | — |  |  | 2.7 |  | 8.2 |  | 2.0 |  |  | 2.0 |
Average remaining service period of active employees expected to receive benefits | — |  | — |  | — |  |  | — |  |  | — |  | — |  | 0.6 years |  | 0.6 years
Summary of defined benefit plans' weighted average asset allocation percentages by asset category | The following table summarizes the defined benefit plans’ weighted average asset allocation percentages by asset category:
| December 31, 2020 |  | December 31, 2019
| Employee benefit plans (2) | SERP |  | Employee benefit plans | SERP
Investment funds |  |  |  |  |
Money market | — | 80 | % |  | 2 | % | 7 | %
Canadian fixed income | — | — | % |  | 98 | % | — | %
Canadian equities | — | — | % |  | — |  | — | %
US equities | — | — | % |  | — |  | — | %
International equities | — | — | % |  | — |  | — | %
Other (1) | — | 20 | % |  | — |  | 93 | %
| — | 100 | % |  | 100 | % | 100 | %
(1)Assets held by the Canada Revenue Agency in the refundable tax account (2)The Pension Plan was settled in September 2020
Summary of sensitivity of the overall pension obligation to changes in the weighted principal assumptions | The sensitivity of the overall pension obligation to changes in the weighted principal assumptions is:
| Change in assumption | Impact on overall obligation
Discount rate | Increase by 0.5% | Decrease by $1,583
| Decrease by 0.5% | Increase by $1,544
Salary escalation rate | Increase by 0.5% | Increase by $1,497
| Decrease by 0.5% | Decrease by $1,558

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- Definition The entire disclosure of net surplus deficit in plan. + References No definition available. + Details
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- Definition The disclosure of defined benefit plans. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 138 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_138&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the fair value of defined benefit plan assets. [Refer: Plan assets [member]; Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 142 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_142&doctype=Standard -URIDate 2020-01-01 + Details
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