Employee Benefit Plans (Other Changes in Plan Assets and Benefit Obligations) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Current year actuarial loss	$ (9,319)	$ (2,846)
Amortization of actuarial loss	2,821	2,881
Total recognized in other comprehensive loss	$ (6,498)	$ 35

Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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