Trade Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
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