Pension obligations (Tables)

12 Months Ended

Dec. 31, 2021

Pension Obligations [Abstract]

Disclosure of additional information about defined benefit plans [Table Text Block]

		Year ended
		Dec. 31, 2021			Dec. 31, 2020
Opening defined benefit obligation:	$	240,354		$	243,733
Current service costs		11,295			11,044
Past service cost (note 5e)		4,989			-
Interest cost		6,172			6,569
Benefits paid from plan		(22,546	)		(35,384	)
Benefits paid from employer		(866	)		(1,317	)
Participant contributions		34			48
Effects of movements in exchange rates		950			2,780
Remeasurement actuarial losses/(gains):
Arising from changes in demographic assumptions		1,498			(1,461	)
Arising from changes in financial assumptions		(24,663	)		16,967
Arising from experience adjustments		(848	)		(2,625	)
Closing defined benefit obligation	$	216,369		$	240,354

Disclosure of detailed information about defined benefit plans, balance by member group [Table Text Block]

		Dec. 31, 2021		Dec. 31, 2020
Active members	$	176,644	$	211,861
Deferred members		2,538		2,198
Retired members		37,187		26,295
Closing defined benefit obligation	$	216,369	$	240,354

Disclosure of detailed information about changes in fair value of plan assets [Table Text Block]

		Year ended
		Dec. 31, 2021			Dec. 31, 2020
Opening fair value of plan assets:	$	203,486		$	202,119
Interest income		5,387			5,695
Remeasurement adjustment:
(Loss) return on plan assets (excluding amounts included in net interest expense)		(306	)		15,377
Contributions from the employer		12,750			12,987
Employer direct benefit payments		866			1,317
Contributions from plan participants		34			48
Benefit payment from employer		(866	)		(1,317	)
Administrative expenses paid from plan assets		(83	)		(77	)
Benefits paid		(22,546	)		(35,384	)
Effects of changes in foreign exchange rates		923			2,721
Closing fair value of plan assets	$	199,645		$	203,486

Disclosure of detailed information about net defined benefit liability (asset) [Table Text Block]

		Dec. 31, 2021			Dec. 31, 2020
Present value of funded defined benefit obligation	$	197,546		$	220,210
Fair value of plan assets		(199,645	)		(203,486	)
Present value of unfunded defined benefit obligation		18,823			20,144
Net liability arising from defined benefit obligation	$	16,724		$	36,868

Disclosure of detailed information about pension obligation [Table Text Block]

		Dec. 31, 2021		Dec. 31, 2020
Pension obligation - current (note 13)	$	10,472	$	13,552
Pension obligation - non-current		6,252		23,316
Total pension obligation	$	16,724	$	36,868

Disclosure of detailed information about pension expense [Table Text Block]

		Dec. 31, 2021		Dec. 31, 2020
Service costs:
Current service cost	$	11,295	$	11,044
Past service cost		4,989		-
Total service cost		16,284		11,044
Net interest expense		785		874
Administration cost		83		77
Defined benefit pension expense	$	17,152	$	11,995
Defined contribution pension expense	$	2,061	$	1,791

Disclosure of detailed information about remeasurement on the net defined benefit liability [Table Text Block]

		Dec. 31, 2021			Dec. 31, 2020
Loss (return) on plan assets (excluding amounts included in net interest expense)	$	306		$	(15,377	)
Actuarial losses (gains) arising from changes in demographic assumptions		1,498			(1,461	)
Actuarial (gains) losses arising from changes in financial assumptions		(24,663	)		16,967
Actuarial gains arising from experience adjustments		(848	)		(2,625	)
Defined benefit gain related to remeasurement	$	(23,707	)	$	(2,496	)
Total pension cost	$	(4,494	)	$	11,290

Disclosure of detailed information about defined benefit plan, assumptions used [Table Text Block]

	2021	2020
Defined benefit cost:
Discount rate - benefit obligations	2.54%	3.08%
Discount rate - service cost	2.66%	3.10%
Expected rate of salary increase1	2.75%	2.75%
Average longevity at retirement age for current pensioners (years)2 :
Males	20.3	20.3
Females	23.7	23.7
Defined benefit obligation:
Discount rate	3.09%	2.54%
Expected rate of salary increase1	2.75%	2.75%
Average longevity at retirement age for current pensioners (years)2 :
Males	20.4	20.3
Females	23.7	23.7
Average longevity at retirement age for current employees (future pensioners) (years)2 :
Males	22.2	22.2
Females	25.4	25.4

Disclosure of fair value of plan assets [Table Text Block]

December 31, 2021		Level 1		Level 2		Level 3		Total
Investments:
Money market instruments	$	2,045	$	-	$	-	$	2,045
Pooled equity funds		78,092		-		-		78,092
Pooled fixed income funds		-		97,229		-		97,229
Alternative investment funds		-		21,983		-		21,983
Balanced funds		-		296		-		296
	$	80,137	$	119,508	$	-	$	199,645

December 31, 2020		Level 1		Level 2		Level 3		Total
Investments:
Money market instruments	$	4,766	$	-	$	-	$	4,766
Pooled equity funds		68,926		-		-		68,926
Pooled fixed income funds		-		98,922		-		98,922
Alternative investment funds		-		30,323		-		30,323
Balanced funds		-		549		-		549
	$	73,692	$	129,794	$	-	$	203,486