Pensions and Other Post-Employment Benefits - Reconciliation of the Benefit Obligations and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in plan assets
Fair value of plan assets at beginning of year	$ 226,176
Fair value of plan assets at end of year	227,340	$ 226,176
Pension Benefits
Change in benefit obligation
Benefit obligation at beginning of year	246,107	186,760
Service cost	1,722	1,403	$ 5,918
Interest cost	4,186	5,234	6,292
Net pension curtailments and settlements	0	(609)
Acquisition	0	30,360
Plan amendments	0	(799)
Actuarial (gain) loss	(8,448)	24,259
Benefit payments	(4,927)	(4,612)
Foreign currency exchange rate changes and other	(2,861)	4,111
Benefit obligation at end of year	235,779	246,107	186,760
Change in plan assets
Fair value of plan assets at beginning of year	226,176	174,046
Plan settlements	0	0
Acquisition	0	23,774
Actual return on plan assets	6,082	30,330
Employer contributions	955	614
Employee contributions	878	498
Benefit payments from fund	(5,399)	(4,720)
Expenses paid from assets	(313)	(234)
Foreign currency exchange rate changes and other	(1,039)	1,868
Fair value of plan assets at end of year	227,340	226,176	174,046
Funded status at end of year	(8,439)	(19,931)
Other assets	18,566	13,074
Other liabilities and accrued items	(1,662)	(470)
Retirement and post-employment benefits	(25,343)	(32,535)
Other Benefits
Change in benefit obligation
Benefit obligation at beginning of year	8,190	8,681
Service cost	80	59	67
Interest cost	116	213	399
Net pension curtailments and settlements	0	0
Acquisition	0	0
Plan amendments	0	0
Actuarial (gain) loss	(112)	224
Benefit payments	(742)	(989)
Foreign currency exchange rate changes and other	(18)	2
Benefit obligation at end of year	7,514	8,190	8,681
Change in plan assets
Fair value of plan assets at beginning of year	0	0
Plan settlements	0	0
Acquisition	0	0
Actual return on plan assets	0	0
Employer contributions	0	0
Employee contributions	0	0
Benefit payments from fund	0	0
Expenses paid from assets	0	0
Foreign currency exchange rate changes and other	0	0
Fair value of plan assets at end of year	0	0	$ 0
Funded status at end of year	(7,514)	(8,190)
Other assets	0	0
Other liabilities and accrued items	(754)	(866)
Retirement and post-employment benefits	$ (6,760)	$ (7,324)