Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001282637-24-000021-index-headers.html | 2024-10-24 08:47:12 | |
| 0001282637-24-000021-index.html | 2024-10-24 08:47:12 | |
| 0001282637-24-000021.txt | 2024-10-24 08:47:12 | |
 0001282637-24-000021-xbrl.zip | 174100 | 2024-10-24 08:47:12 |
| FilingSummary.xml | 36986 | 2024-10-24 08:47:12 |
| Financial_Report.xlsx | 77437 | 2024-10-24 08:47:12 |
| MetaLinks.json | 784672 | 2024-10-24 08:47:12 |
| neu-20240930.htm | 875979 | 2024-10-24 08:47:12 |
| neu-20240930.xsd | 34804 | 2024-10-24 08:47:12 |
| neu-20240930xexhibit31a.htm | 9966 | 2024-10-24 08:47:12 |
| neu-20240930xexhibit31b.htm | 10052 | 2024-10-24 08:47:12 |
| neu-20240930xexhibit32a.htm | 4798 | 2024-10-24 08:47:12 |
| neu-20240930xexhibit32b.htm | 4785 | 2024-10-24 08:47:12 |
| neu-20240930_cal.xml | 65760 | 2024-10-24 08:47:12 |
| neu-20240930_def.xml | 160769 | 2024-10-24 08:47:12 |
| neu-20240930_htm.xml | 791246 | 2024-10-24 08:47:12 |
| neu-20240930_lab.xml | 518981 | 2024-10-24 08:47:12 |
| neu-20240930_pre.xml | 365985 | 2024-10-24 08:47:12 |
| R1.htm | 50190 | 2024-10-24 08:47:12 |
| R10.htm | 4301 | 2024-10-24 08:47:12 |
| R11.htm | 11483 | 2024-10-24 08:47:12 |
| R12.htm | 38049 | 2024-10-24 08:47:12 |
| R13.htm | 25480 | 2024-10-24 08:47:12 |
| R14.htm | 52553 | 2024-10-24 08:47:12 |
| R15.htm | 71415 | 2024-10-24 08:47:12 |
| R16.htm | 25098 | 2024-10-24 08:47:12 |
| R17.htm | 10911 | 2024-10-24 08:47:12 |
| R18.htm | 33114 | 2024-10-24 08:47:12 |
| R19.htm | 26748 | 2024-10-24 08:47:12 |
| R2.htm | 72928 | 2024-10-24 08:47:12 |
| R20.htm | 8937 | 2024-10-24 08:47:12 |
| R21.htm | 30419 | 2024-10-24 08:47:12 |
| R22.htm | 17045 | 2024-10-24 08:47:12 |
| R23.htm | 13841 | 2024-10-24 08:47:12 |
| R24.htm | 14815 | 2024-10-24 08:47:12 |
| R25.htm | 8479 | 2024-10-24 08:47:12 |
| R26.htm | 4412 | 2024-10-24 08:47:12 |
| R27.htm | 39077 | 2024-10-24 08:47:12 |
| R28.htm | 20551 | 2024-10-24 08:47:12 |
| R29.htm | 47729 | 2024-10-24 08:47:12 |
| R3.htm | 42627 | 2024-10-24 08:47:12 |
| R30.htm | 71350 | 2024-10-24 08:47:12 |
| R31.htm | 23948 | 2024-10-24 08:47:12 |
| R32.htm | 11873 | 2024-10-24 08:47:12 |
| R33.htm | 35531 | 2024-10-24 08:47:12 |
| R34.htm | 12281 | 2024-10-24 08:47:12 |
| R35.htm | 29832 | 2024-10-24 08:47:12 |
| R36.htm | 10499 | 2024-10-24 08:47:12 |
| R37.htm | 11084 | 2024-10-24 08:47:12 |
| R38.htm | 27611 | 2024-10-24 08:47:12 |
| R39.htm | 22190 | 2024-10-24 08:47:12 |
| R4.htm | 15672 | 2024-10-24 08:47:12 |
| R40.htm | 14072 | 2024-10-24 08:47:12 |
| R41.htm | 19708 | 2024-10-24 08:47:12 |
| R42.htm | 21962 | 2024-10-24 08:47:12 |
| R43.htm | 32423 | 2024-10-24 08:47:12 |
| R44.htm | 15514 | 2024-10-24 08:47:12 |
| R45.htm | 32879 | 2024-10-24 08:47:12 |
| R46.htm | 46826 | 2024-10-24 08:47:12 |
| R47.htm | 11938 | 2024-10-24 08:47:12 |
| R48.htm | 24015 | 2024-10-24 08:47:12 |
| R49.htm | 28131 | 2024-10-24 08:47:12 |
| R5.htm | 103625 | 2024-10-24 08:47:12 |
| R50.htm | 21912 | 2024-10-24 08:47:12 |
| R51.htm | 22466 | 2024-10-24 08:47:12 |
| R52.htm | 56780 | 2024-10-24 08:47:12 |
| R53.htm | 21227 | 2024-10-24 08:47:12 |
| R54.htm | 7667 | 2024-10-24 08:47:12 |
| R55.htm | 48235 | 2024-10-24 08:47:12 |
| R56.htm | 13528 | 2024-10-24 08:47:12 |
| R57.htm | 18692 | 2024-10-24 08:47:12 |
| R6.htm | 12044 | 2024-10-24 08:47:12 |
| R7.htm | 70427 | 2024-10-24 08:47:12 |
| R8.htm | 4751 | 2024-10-24 08:47:12 |
| R9.htm | 63876 | 2024-10-24 08:47:12 |
| report.css | 2767 | 2024-10-24 08:47:12 |
| Show.js | 1085 | 2024-10-24 08:47:12 |