Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-24-010232-index-headers.html | 2024-03-11 16:15:03 | |
| 0001628280-24-010232-index.html | 2024-03-11 16:15:03 | |
| 0001628280-24-010232.txt | 2024-03-11 16:15:03 | |
 0001628280-24-010232-xbrl.zip | 517355 | 2024-03-11 16:15:03 |
| FilingSummary.xml | 37416 | 2024-03-11 16:15:03 |
| Financial_Report.xlsx | 109928 | 2024-03-11 16:15:03 |
 image_0.jpg | 8282 | 2024-03-11 16:15:03 |
 image_0a.jpg | 26992 | 2024-03-11 16:15:03 |
| MetaLinks.json | 874199 | 2024-03-11 16:15:03 |
| ngm-20231231.htm | 1852648 | 2024-03-11 16:15:03 |
| ngm-20231231.xsd | 51611 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex1014.htm | 39717 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex1015.htm | 39701 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex1016.htm | 63736 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex211.htm | 2650 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex231.htm | 3950 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex311.htm | 10304 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex312.htm | 10307 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex321.htm | 6546 | 2024-03-11 16:15:03 |
| ngm-20231231x10kex971.htm | 40909 | 2024-03-11 16:15:03 |
| ngm-20231231_cal.xml | 64672 | 2024-03-11 16:15:03 |
| ngm-20231231_def.xml | 258517 | 2024-03-11 16:15:03 |
 ngm-20231231_g1.jpg | 124562 | 2024-03-11 16:15:03 |
| ngm-20231231_htm.xml | 940071 | 2024-03-11 16:15:03 |
| ngm-20231231_lab.xml | 709813 | 2024-03-11 16:15:03 |
| ngm-20231231_pre.xml | 479836 | 2024-03-11 16:15:03 |
 ngm_logoxposxcmyk.jpg | 358346 | 2024-03-11 16:15:03 |
 ngm_logoxposxcmyk1.jpg | 358346 | 2024-03-11 16:15:03 |
| R1.htm | 65426 | 2024-03-11 16:15:03 |
| R10.htm | 62011 | 2024-03-11 16:15:03 |
| R11.htm | 80423 | 2024-03-11 16:15:03 |
| R12.htm | 30063 | 2024-03-11 16:15:03 |
| R13.htm | 26846 | 2024-03-11 16:15:03 |
| R14.htm | 17053 | 2024-03-11 16:15:03 |
| R15.htm | 78876 | 2024-03-11 16:15:03 |
| R16.htm | 6289 | 2024-03-11 16:15:03 |
| R17.htm | 10369 | 2024-03-11 16:15:03 |
| R18.htm | 62567 | 2024-03-11 16:15:03 |
| R19.htm | 5352 | 2024-03-11 16:15:03 |
| R2.htm | 7793 | 2024-03-11 16:15:03 |
| R20.htm | 15212 | 2024-03-11 16:15:03 |
| R21.htm | 8482 | 2024-03-11 16:15:03 |
| R22.htm | 86799 | 2024-03-11 16:15:03 |
| R23.htm | 27688 | 2024-03-11 16:15:03 |
| R24.htm | 78341 | 2024-03-11 16:15:03 |
| R25.htm | 40785 | 2024-03-11 16:15:03 |
| R26.htm | 8711 | 2024-03-11 16:15:03 |
| R27.htm | 10950 | 2024-03-11 16:15:03 |
| R28.htm | 65711 | 2024-03-11 16:15:03 |
| R29.htm | 8428 | 2024-03-11 16:15:03 |
| R3.htm | 99144 | 2024-03-11 16:15:03 |
| R30.htm | 59673 | 2024-03-11 16:15:03 |
| R31.htm | 12918 | 2024-03-11 16:15:03 |
| R32.htm | 41003 | 2024-03-11 16:15:03 |
| R33.htm | 7853 | 2024-03-11 16:15:03 |
| R34.htm | 34254 | 2024-03-11 16:15:03 |
| R35.htm | 13069 | 2024-03-11 16:15:03 |
| R36.htm | 35355 | 2024-03-11 16:15:03 |
| R37.htm | 7232 | 2024-03-11 16:15:03 |
| R38.htm | 36638 | 2024-03-11 16:15:03 |
| R39.htm | 12376 | 2024-03-11 16:15:03 |
| R4.htm | 22294 | 2024-03-11 16:15:03 |
| R40.htm | 19254 | 2024-03-11 16:15:03 |
| R41.htm | 5013 | 2024-03-11 16:15:03 |
| R42.htm | 18958 | 2024-03-11 16:15:03 |
| R43.htm | 61650 | 2024-03-11 16:15:03 |
| R44.htm | 11636 | 2024-03-11 16:15:03 |
| R45.htm | 41960 | 2024-03-11 16:15:03 |
| R46.htm | 9024 | 2024-03-11 16:15:03 |
| R47.htm | 139388 | 2024-03-11 16:15:03 |
| R48.htm | 19621 | 2024-03-11 16:15:03 |
| R49.htm | 53011 | 2024-03-11 16:15:03 |
| R5.htm | 52926 | 2024-03-11 16:15:03 |
| R50.htm | 10910 | 2024-03-11 16:15:03 |
| R51.htm | 22051 | 2024-03-11 16:15:03 |
| R52.htm | 22109 | 2024-03-11 16:15:03 |
| R53.htm | 14183 | 2024-03-11 16:15:03 |
| R54.htm | 20806 | 2024-03-11 16:15:03 |
| R55.htm | 12118 | 2024-03-11 16:15:03 |
| R56.htm | 19752 | 2024-03-11 16:15:03 |
| R57.htm | 32409 | 2024-03-11 16:15:03 |
| R58.htm | 24832 | 2024-03-11 16:15:03 |
| R59.htm | 9812 | 2024-03-11 16:15:03 |
| R6.htm | 23242 | 2024-03-11 16:15:03 |
| R7.htm | 75486 | 2024-03-11 16:15:03 |
| R8.htm | 84038 | 2024-03-11 16:15:03 |
| R9.htm | 18879 | 2024-03-11 16:15:03 |
| report.css | 2767 | 2024-03-11 16:15:03 |
| Show.js | 1085 | 2024-03-11 16:15:03 |