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Segment Information
 9 Months Ended
Sep. 30, 2022
Segment Reporting [Abstract]  
Segment Information Segment Information
The tables below show our consolidated segment results. The “All other” category includes the operations of the antiknock compounds business, as well as certain contract manufacturing and services associated with Ethyl Corporation (Ethyl).
Net Sales by Segment
Third Quarter Ended
September 30,		Nine Months Ended
September 30,
(in thousands)2022202120222021
Petroleum additives
     Lubricant additives$582,559 $527,142 $1,775,574 $1,520,475 
     Fuel additives110,134 91,928 298,444 250,080 
          Total692,693 619,070 2,074,018 1,770,555 
All other3,356 3,137 8,222 8,988 
Net sales$696,049 $622,207 $2,082,240 $1,779,543 

Segment Operating Profit
Third Quarter Ended
September 30,		Nine Months Ended
September 30,
(in thousands)2022202120222021
Petroleum additives$83,023 $72,128 $261,130 $240,399 
All other(41)(151)(205)(798)
Segment operating profit82,982 71,977 260,925 239,601 
Corporate, general, and administrative expenses(4,167)(8,731)(15,389)(16,591)
Interest and financing expenses, net(8,369)(9,345)(24,859)(24,557)
Loss on early extinguishment of debt0 0 (7,545)0 
Other income (expense), net9,883 7,252 26,312 19,128 
Income before income tax expense
$80,329 $61,153 $239,444 $217,581