Employee Benefit Plans (Amounts Recognized in Consolidated Balance Sheets) (Details) - Employee Pension Plans - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Funded Status
Funded status	$ (35,884)	$ (29,250)
Net unfunded amounts recognized in Consolidated Balance Sheets consist of:
Current liabilities	(293)	(279)
Long-term liabilities	(35,591)	(28,971)
Total net unfunded amount recognized in Consolidated Balance Sheets	$ (35,884)	$ (29,250)

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
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Name:	us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant