PENSION LIABILITIES, NET (Summary Of Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Liability, Defined Benefit Plan [Abstract]
Service cost		$ 12	$ 16
Interest cost	53	47	47
Net periodic benefit cost	$ 53	$ 59	$ 63

Amount of cost recognized for passage of time related to defined benefit plan.

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Name:	us-gaap_DefinedBenefitPlanInterestCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration