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Quarterly Financial Information (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Unaudited Quarterly Financial Information
The following is a summary of the unaudited quarterly financial information for the two years ended December 31, 2021 and 2020 (in thousands, except per share data):
 Three Months Ended
2021March 31June 30September 30December 31
Net sales$444,140 $744,408 $716,320 $687,853 
Gross profit84,504 277,342 270,766 235,134 
Net income41,189 183,053 175,538 141,642 
Earnings per common share – basic2.00 8.89 8.60 7.02 
Earnings per common share – diluted1.99 8.82 8.51 6.91 
 Three Months Ended
2020March 31June 30September 30December 31
Net sales$302,794 $253,631 $339,700 $380,823 
Gross profit45,773 36,499 53,459 58,804 
Net income18,607 12,347 21,012 24,100 
Earnings per common share – basic0.89 0.60 1.02 1.17 
Earnings per common share – diluted0.89 0.60 1.02 1.17