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Additional Cash Flow Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Changes in operating assets and liabilities, net of effect of businesses acquired [Abstract]      
Accounts receivable $ 4,662 $ 66,158 $ (62,433)
Inventories (24,204) 18,762 (80,182)
Prepaid expenses and other current assets 12,692 271 (11,670)
Accounts payable 18,485 (43,791) (2,277)
Other current liabilities 6,157 (52,929) 54,745
Net change in operating assets and liabilities $ 17,792 $ (11,529) $ (101,817)