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Trade Accounts Receivable, Net (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019
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Receivables [Abstract] |  |  |
Trade accounts receivable | $ 231,559 | $ 144,729 | $ 186,219
Allowance for doubtful accounts | (2,032) | (1,935) | (1,434)
Allowance for sales discounts and returns | (3,080) | (3,430) | (3,887)
Trade accounts receivable, net | $ 226,447 | $ 139,364 | $ 180,898

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