| transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            -1.43K | 
            -0.57% | 
            $0.00 | 
            247K | 
            Jan 21, 2025 | 
            Direct | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +150 | 
            +6.93% | 
            $0.00 | 
            2.32K | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 1) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +150 | 
            +8.73% | 
            $0.00 | 
            1.87K | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 2) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +75 | 
            +4.77% | 
            $0.00 | 
            1.65K | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 3) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +150 | 
            +10.65% | 
            $0.00 | 
            1.56K | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 4) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +75 | 
            +6.37% | 
            $0.00 | 
            1.25K | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 5) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +75 | 
            +8.52% | 
            $0.00 | 
            955 | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 6) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +75 | 
            +8.9% | 
            $0.00 | 
            918 | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 7) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +75 | 
            +14.97% | 
            $0.00 | 
            576 | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 8) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +75 | 
            +25.25% | 
            $0.00 | 
            372 | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 9) | 
             | 
          
          
            | transaction | 
            NEU | 
            Common Stock | 
            Gift | 
            $0 | 
            +150 | 
            +59.52% | 
            $0.00 | 
            402 | 
            Jan 21, 2025 | 
            Shares held as trustee for grandchild (trust 10) | 
             | 
          
          
            | holding | 
            NEU | 
            Common Stock | 
             | 
             | 
             | 
             | 
             | 
            5.09K | 
            Jan 21, 2025 | 
            Shares held by reporting person's wife | 
             | 
          
          
            | holding | 
            NEU | 
            Common Stock | 
             | 
             | 
             | 
             | 
             | 
            46.4K | 
            Jan 21, 2025 | 
            Shares held as co-trustee fbo (among others reporting Floyd D. Gottwald) | 
             | 
          
          
            | holding | 
            NEU | 
            Common Stock | 
             | 
             | 
             | 
             | 
             | 
            6.89K | 
            Jan 21, 2025 | 
            Shares held as co-trustee fbo children dtd. 12/16/1991 | 
             | 
          
          
            | holding | 
            NEU | 
            Common Stock | 
             | 
             | 
             | 
             | 
             | 
            63.6K | 
            Jan 21, 2025 | 
            2022 GRAT | 
             | 
          
          
            | holding | 
            NEU | 
            Common Stock | 
             | 
             | 
             | 
             | 
             | 
            39.2K | 
            Jan 21, 2025 | 
            NewMarket Savings Plan | 
            F1 |