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Employee Benefit Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Service Cost Rate		1.30%	1.30%	1.50%
Defined Benefit Plan, Plan with Benefit Obligation in Excess of Plan Assets, Benefit Obligation (Deprecated 2018-01-31)		$ 225,388	$ 171,185
Defined Benefit Plan, Service Cost		$ 3,592	$ 3,215	$ 4,525
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		1.40%	2.10%
Defined Benefit Plan, Plan Assets, Contributions by Employer Including Benefits Paid to Participants	$ 13,000	$ 5,000
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		42,000
Defined Benefit Plan, Plan Assets, Business Combination		0	$ 251
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)		2,558	3,018
Defined Benefit Plan, Plan Assets, Contributions by Employer		4,740	9,975
Defined Benefit Plan, Benefit Obligation		225,388	201,492	$ 126,031
Defined Benefit Plan, Benefit Obligation, Business Combination		2,071	79,211
Assets for Plan Benefits, Defined Benefit Plan		0	377
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation		222,607	169,097
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets		$ 83,305	$ 60,988
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase		1.70%	0.90%
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Interest Cost Rate Cost		2.50%	2.50%	3.00%
Defined Benefit Plan, Plan Assets, Amount		$ 83,305	$ 91,672	$ 82,852
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant		408	415
Defined Benefit Plan, Plan Assets, Benefits Paid		(6,770)	(2,788)
Defined Benefit Plan, Plan Assets, Payment for Settlement		(8,493)	0
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss)		(810)	(2,051)
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held		1,424	2,556
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchase, Sale, and Settlement		(1,181)	(541)
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3		(19,640)	255
Defined Benefit Plans, Plan Assets Level 3 Reconciliation, Currency Translation		(915)	(2,056)
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months		43,446
Defined Benefit Plan, Expected Future Benefit Payment, Year Five		5,474
Defined Benefit Plan, Expected Future Benefit Payment, Year Four		5,003
Defined Benefit Plan, Expected Future Benefit Payment, Year Three		4,890
Defined Benefit Plan, Expected Future Benefit Payment, Year Two		4,357
Liability, Defined Benefit Plan, Noncurrent		(130,329)	(106,917)
Defined Benefit Plan, Interest Cost		4,077	3,476	3,670
Defined Benefit Plan, Expected Return (Loss) on Plan Assets		(2,337)	(2,949)	(2,467)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		0	0	(181)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant		408	415
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)		32,018	(989)
Defined Benefit Plan, Benefit Obligation, Benefits Paid		(6,849)	(4,447)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment		6	0
Defined Benefit Plan, Benefit Obligation, Payment for Settlement		(8,493)	(756)
Defined Benefit Plan, Amortization of Gain (Loss)		(404)	(54)	473
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment		0	0	(3,811)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		(378)	$ 74	$ (4)
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter		$ 29,946
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase		1.80%	1.90%	1.30%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets		3.10%	4.80%	5.00%
Liability, Defined Benefit Plan, Current		$ (11,754)	$ (3,280)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position		(142,083)	(109,820)
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)		(2,922)	(4,664)
Defined Benefit Plan, Accumulated Benefit Obligation		222,607	199,337
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year		1,000
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position		(142,083)	(109,820)
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets		83,305	60,988
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		4,550	3,762	$ 2,205
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		29,468	30,684
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		40,676	60,988	$ 60,774
Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		13,161
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	30,684
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	30,684
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Cash and Cash Equivalents [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0
Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		13,161	0
Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Mutual Fund [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		13,161
Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		433	0
Short-term Investments [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		433	0
Short-term Investments [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Short-term Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Short-term Investments [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0
U.S. Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		29,035	0
U.S. Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		29,035	0
U.S. Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
U.S. Bonds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
U.S. Bonds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0
Insurance Contracts, at Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		40,676	60,988
Insurance Contracts, at Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Insurance Contracts, at Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0
Insurance Contracts, at Fair Value [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		40,676	$ 60,988
Insurance Contracts, at Fair Value [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0
The US Plan [Member]
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position		8,000
Interest income and other income, net [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		$ (1,000)

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Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Interest Cost Rate Cost

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Defined Benefit Plan, Plan Assets, Contributions by Employer Including Benefits Paid to Participants

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Defined Benefit Plans, Plan Assets Level 3 Reconciliation, Currency Translation

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

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Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held.

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

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Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

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Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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