Pension and Other Postretirement Benefits - Funded Status Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	$ 71	$ 73
Benefits Paid	(11,934)	(11,225)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	302,270	315,649
Actual Return on Plan Assets	8,116	31,126
Employer Contributions	6,352	9,214
Employee Contributions	71	73
Plan Settlements	(541)	(55,810)
Benefits Paid	(11,934)	(11,225)
Plan Expenses and Premiums Paid	(74)	(633)
Currency translation adjustment	(9,694)	13,876
Fair Value of Plan Assets at End of Year	294,566	302,270	$ 315,649
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	7,916	6,748
Current Liabilities	(1,548)	(1,466)
Non-current Liabilities	(45,984)	(63,890)
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	357,644	371,616
Service Cost	1,245	4,831	3,941
Interest Cost	4,331	6,339	6,359
Employee Contributions	71	73
Effect of Plan Amendments	0	50
Plan Settlements	(541)	(55,810)
Defined Benefit Plan, Curtailments	0	(2,324)
Benefits Paid	(11,933)	(11,225)
Plan Expenses and Premiums Paid	(74)	(135)
Transfer In of Business Acquisition	231	0
Actuarial (gain) Loss	(7,929)	29,248
Translation Difference and Other	(10,873)	14,981
Benefit Obligation at End of Year	332,172	357,644	371,616
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	91,555
Employee Contributions	71	73
Benefits Paid	(11,933)	(11,225)
Fair Value of Plan Assets at End of Year	196,861	91,555
Defined Benefit Plan, Funded Status of Plan	(37,606)	(55,374)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	7,916	6,748
Current Liabilities	(1,328)	(1,180)
Non-current Liabilities	(44,194)	(60,942)
Net Amount Recognized	(37,606)	(55,374)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	21	24
Accumulated Loss	(28,926)	(27,508)
Accumulated Other Comprehensive Loss ("AOCI")	(28,905)	(27,484)
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	(8,701)	(27,890)
Net Amount Recognized	(37,606)	(55,374)
Domestic plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	0	0
Benefits Paid	(5,065)	(6,138)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	73,481	120,550
Actual Return on Plan Assets	7,201	10,759
Employer Contributions	2,063	2,302
Employee Contributions	0	0
Plan Settlements	0	(53,494)
Benefits Paid	(5,065)	(6,138)
Plan Expenses and Premiums Paid	0	(498)
Currency translation adjustment	0	0
Fair Value of Plan Assets at End of Year	77,680	73,481	120,550
Domestic plan [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	109,969	153,723
Service Cost	547	491	434
Interest Cost	1,737	2,923	3,313
Employee Contributions	0	0
Effect of Plan Amendments	0	50
Plan Settlements	0	(53,494)
Defined Benefit Plan, Curtailments	0	0
Benefits Paid	(5,064)	(6,138)
Plan Expenses and Premiums Paid	0	0
Transfer In of Business Acquisition	0	0
Actuarial (gain) Loss	(3,769)	12,414
Translation Difference and Other	0	0
Benefit Obligation at End of Year	103,420	109,969	153,723
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	73,481
Employee Contributions	0	0
Benefits Paid	(5,064)	(6,138)
Fair Value of Plan Assets at End of Year	77,680	73,481
Defined Benefit Plan, Funded Status of Plan	(25,740)	(36,488)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	0	0
Current Liabilities	(1,137)	(612)
Non-current Liabilities	(24,603)	(35,876)
Net Amount Recognized	(25,740)	(36,488)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	43	(50)
Accumulated Loss	(9,763)	(5,532)
Accumulated Other Comprehensive Loss ("AOCI")	(9,720)	(5,482)
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	(16,020)	(31,006)
Net Amount Recognized	(25,740)	(36,488)
Domestic plan [Member] | Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	3,234	4,266
Service Cost	1	5	6
Interest Cost	27	77	143
Employee Contributions	0	0
Effect of Plan Amendments	(78)	0
Plan Settlements	0	0
Defined Benefit Plan, Curtailments		0
Benefits Paid	(182)	(250)
Plan Expenses and Premiums Paid	0	0
Transfer In of Business Acquisition	0	0
Actuarial (gain) Loss	(992)	(864)
Translation Difference and Other	0	0
Benefit Obligation at End of Year	2,010	3,234	4,266
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employee Contributions	0	0
Benefits Paid	(182)	(250)
Defined Benefit Plan, Funded Status of Plan	(2,010)	(3,234)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	0	0
Current Liabilities	(220)	(286)
Non-current Liabilities	(1,790)	(2,948)
Net Amount Recognized	(2,010)	(3,234)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	46	0
Accumulated Loss	1,034	124
Accumulated Other Comprehensive Loss ("AOCI")	1,080	124
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	(3,090)	(3,358)
Net Amount Recognized	(2,010)	(3,234)
Foreign [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	71	73
Benefits Paid	(6,869)	(5,087)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	228,789	195,099
Actual Return on Plan Assets	915	20,367
Employer Contributions	4,289	6,912
Employee Contributions	71	73
Plan Settlements	(541)	(2,316)
Benefits Paid	(6,869)	(5,087)
Plan Expenses and Premiums Paid	(74)	(135)
Currency translation adjustment	(9,694)	13,876
Fair Value of Plan Assets at End of Year	216,886	228,789	195,099
Foreign [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	247,675	217,893
Service Cost	698	4,340	3,507
Interest Cost	2,594	3,416	3,046
Employee Contributions	71	73
Effect of Plan Amendments	0	0
Plan Settlements	(541)	(2,316)
Defined Benefit Plan, Curtailments	0	(2,324)
Benefits Paid	(6,869)	(5,087)
Plan Expenses and Premiums Paid	(74)	(135)
Transfer In of Business Acquisition	231	0
Actuarial (gain) Loss	(4,160)	16,834
Translation Difference and Other	(10,873)	14,981
Benefit Obligation at End of Year	228,752	247,675	217,893
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	18,074
Employee Contributions	71	73
Benefits Paid	(6,869)	(5,087)
Fair Value of Plan Assets at End of Year	119,181	18,074
Defined Benefit Plan, Funded Status of Plan	(11,866)	(18,886)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	7,916	6,748
Current Liabilities	(191)	(568)
Non-current Liabilities	(19,591)	(25,066)
Net Amount Recognized	(11,866)	(18,886)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	(22)	(26)
Accumulated Loss	(19,163)	(21,976)
Accumulated Other Comprehensive Loss ("AOCI")	(19,185)	(22,002)
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	7,319	3,116
Net Amount Recognized	(11,866)	(18,886)
Foreign [Member] | Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	0	0
Defined Benefit Plan, Curtailments	0
Benefits Paid	(182)	(250)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	0	0
Actual Return on Plan Assets	0	0
Employer Contributions	182	250
Employee Contributions	0	0
Plan Settlements	0	0
Benefits Paid	(182)	(250)
Plan Expenses and Premiums Paid	0	0
Currency translation adjustment	0	0
Fair Value of Plan Assets at End of Year	$ 0	$ 0	$ 0