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Related Party Transactions (Details) - Unconsolidated Affiliates - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]      
Sales to unconsolidated affiliates $ 22,589 $ 20,068 $ 35,094
Purchases from unconsolidated affiliates 168,072 210,351 $ 256,701
Receivables from related parties 4,098 7,163  
Payables to related parties $ 30,123 $ 35,502