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Trade Accounts Receivable, net (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Receivables [Abstract]    
Trade accounts receivable $ 170,001 $ 144,729
Allowance for doubtful accounts (2,110) (1,935)
Allowance for sales discounts (2,763) (3,430)
Trade accounts receivable, net $ 165,128 $ 139,364