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Trade Accounts Receivable, net (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Receivables [Abstract]    
Trade accounts receivable $ 144,729 $ 149,886
Allowance for doubtful accounts (1,935) (1,364)
Allowance for sales discounts (3,430) (2,470)
Trade accounts receivable, net $ 139,364 $ 146,052