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Trade Accounts Receivable, net
12 Months Ended
Dec. 31, 2020
Receivables [Abstract]  
Trade Accounts Receivable, net Trade Accounts Receivable, net
Trade accounts receivable consisted of the following:
 
 December 31,
 (in thousands)
20202019
Trade accounts receivable$170,001 $144,729 
Allowance for doubtful accounts(2,110)(1,935)
Allowance for sales discounts(2,763)(3,430)
 $165,128 $139,364