Retirement And Other Benefit Plans - Statement of Financial Position (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Retirement Benefits [Abstract]
Deferred taxes	$ 8,694
Other long-term liabilities	34,776
Accumulated other comprehensive income (loss)	$ (207)

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