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- Definition

Change In Projected Benefit Obligation

+ References

No definition available.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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- Definition

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.

+ References

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Percentage of plan assets to benefit obligation of defined benefit plan.

+ References

No definition available.

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- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of cost for defined contribution plan.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

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- Definition

Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.

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Pension and Other Postretirement Benefit Plans - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2008	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Pension obligations		$ 27,865	$ 27,407
Pension Benefits
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Actuarial loss, net		53,831	47,632
Net benefit obligation		(123,763)	(125,172)
Pension obligations		40,000	42,000
Pension Benefits \| Deferred revenues / other noncurrent liabilities
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Net benefit obligation		$ 124,000	125,000
401(k) Plan
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Percent match of contribution plan		100.00%
Percentage of eligible compensation of contribution plan		6.00%
Expenses recognized related to the 401(k) Plan		$ 7,000	23,000	$ 22,000
LLP
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Decrease in projected benefit obligation	$ 34,000
Benefit obligation amortization period	23 years 6 months
Contribution to pension plan		$ 15,000	$ 2,000
Defined benefit plan percentage of funded status		80.00%
Estimated contributions in 2020		$ 13,000
LLP \| Global Equities
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Defined benefit plan target allocations percentage		38.00%
LLP \| Real Estate
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Defined benefit plan target allocations percentage		14.00%
LLP \| Money market mutual fund
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Defined benefit plan target allocations percentage		18.00%
LLP \| Liability Heding Assets
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Defined benefit plan target allocations percentage		27.00%
LLP \| Cash
Defined Benefit Plan And Other Postretirement Benefit Plan Table Text Block [Line Items]
Defined benefit plan target allocations percentage		2.00%