PENSION (Plan Assets) (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	$ 835,139
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	1,050,509	$ 835,139
FairValueInputsLevel3Member
FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	4,224	10,721
DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	(15)	115
Defined Benefit Plan, Decrease for Sale	(58)
DefinedBenefitPlanPurchasesSalesAndSettlements	(157)	(6,693)
DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	408	81
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	4,402	4,224
Insurance Contracts [Member] \| FairValueInputsLevel3Member
FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0	8,408
DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	5	0
DefinedBenefitPlanPurchasesSalesAndSettlements	523	(8,408)
DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	49	0
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	577	0
Other Assets [Member] \| FairValueInputsLevel3Member
FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	4,224	2,313
DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	(20)	115
Defined Benefit Plan, Decrease for Sale	(58)
DefinedBenefitPlanPurchasesSalesAndSettlements	(680)	1,715
DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets	359	81
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	$ 3,825	$ 4,224

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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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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

Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan.

+ References

+ Details

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- Definition

Amount, measured using unobservable input, of decrease in plan asset of defined benefit plan from sale.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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- Definition

Amount, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment.

+ References

+ Details

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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.

+ Details

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