Pension And Other Liabilities (Schedule Of Pension Benefit Obligation Recognized In Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Pension And Other Liabilities [Abstract]
Current liabilities	$ 684	$ 684
Other liabilities - Non current	4,048	4,469
Total pension liability	$ 4,732	$ 5,153

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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Name:	us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant