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Other Current Assets and Other Assets - Other Noncurrent Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Other Assets, Noncurrent [Abstract]    
Deferred compensation plan assets $ 14,370 $ 16,708
Long-term portion of notes receivable 9,856 0
Other 2,299 782
Total $ 26,525 $ 17,490