Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001558370-21-014721-index-headers.html | 2021-11-04 21:50:25 | |
| 0001558370-21-014721-index.html | 2021-11-04 21:50:25 | |
| 0001558370-21-014721.txt | 2021-11-04 21:50:25 | |
 0001558370-21-014721-xbrl.zip | 360731 | 2021-11-04 21:50:25 |
| FilingSummary.xml | 39007 | 2021-11-04 21:50:25 |
| Financial_Report.xlsx | 108756 | 2021-11-04 21:50:25 |
| MetaLinks.json | 741440 | 2021-11-04 21:50:25 |
| ntra-20210930.xsd | 64148 | 2021-11-04 21:50:25 |
| ntra-20210930x10q.htm | 2598777 | 2021-11-04 21:50:25 |
| ntra-20210930x10q_htm.xml | 2585296 | 2021-11-04 21:50:25 |
| ntra-20210930xex10d1.htm | 277924 | 2021-11-04 21:50:25 |
| ntra-20210930xex31d1.htm | 13835 | 2021-11-04 21:50:25 |
| ntra-20210930xex31d2.htm | 14874 | 2021-11-04 21:50:25 |
| ntra-20210930xex32d1.htm | 10351 | 2021-11-04 21:50:25 |
| ntra-20210930xex32d2.htm | 10607 | 2021-11-04 21:50:25 |
| ntra-20210930xex3d1.htm | 237771 | 2021-11-04 21:50:25 |
 ntra-20210930xex3d1001.jpg | 55114 | 2021-11-04 21:50:25 |
| ntra-20210930_cal.xml | 71397 | 2021-11-04 21:50:25 |
| ntra-20210930_def.xml | 304260 | 2021-11-04 21:50:25 |
| ntra-20210930_lab.xml | 648750 | 2021-11-04 21:50:25 |
| ntra-20210930_pre.xml | 508933 | 2021-11-04 21:50:25 |
| R1.htm | 53841 | 2021-11-04 21:50:25 |
| R10.htm | 67241 | 2021-11-04 21:50:25 |
| R11.htm | 124109 | 2021-11-04 21:50:25 |
| R12.htm | 86524 | 2021-11-04 21:50:25 |
| R13.htm | 30663 | 2021-11-04 21:50:25 |
| R14.htm | 32165 | 2021-11-04 21:50:25 |
| R15.htm | 285576 | 2021-11-04 21:50:25 |
| R16.htm | 45861 | 2021-11-04 21:50:25 |
| R17.htm | 12964 | 2021-11-04 21:50:25 |
| R18.htm | 62061 | 2021-11-04 21:50:25 |
| R19.htm | 5578 | 2021-11-04 21:50:25 |
| R2.htm | 88570 | 2021-11-04 21:50:25 |
| R20.htm | 112559 | 2021-11-04 21:50:25 |
| R21.htm | 69944 | 2021-11-04 21:50:25 |
| R22.htm | 100142 | 2021-11-04 21:50:25 |
| R23.htm | 62712 | 2021-11-04 21:50:25 |
| R24.htm | 122187 | 2021-11-04 21:50:25 |
| R25.htm | 87328 | 2021-11-04 21:50:25 |
| R26.htm | 22313 | 2021-11-04 21:50:25 |
| R27.htm | 16491 | 2021-11-04 21:50:25 |
| R28.htm | 283644 | 2021-11-04 21:50:25 |
| R29.htm | 30880 | 2021-11-04 21:50:25 |
| R3.htm | 13283 | 2021-11-04 21:50:25 |
| R30.htm | 60693 | 2021-11-04 21:50:25 |
| R31.htm | 6493 | 2021-11-04 21:50:25 |
| R32.htm | 56722 | 2021-11-04 21:50:25 |
| R33.htm | 16097 | 2021-11-04 21:50:25 |
| R34.htm | 9255 | 2021-11-04 21:50:25 |
| R35.htm | 9804 | 2021-11-04 21:50:25 |
| R36.htm | 11973 | 2021-11-04 21:50:25 |
| R37.htm | 54096 | 2021-11-04 21:50:25 |
| R38.htm | 100658 | 2021-11-04 21:50:25 |
| R39.htm | 26190 | 2021-11-04 21:50:25 |
| R4.htm | 67537 | 2021-11-04 21:50:25 |
| R40.htm | 14273 | 2021-11-04 21:50:25 |
| R41.htm | 12992 | 2021-11-04 21:50:25 |
| R42.htm | 15987 | 2021-11-04 21:50:25 |
| R43.htm | 25735 | 2021-11-04 21:50:25 |
| R44.htm | 60246 | 2021-11-04 21:50:25 |
| R45.htm | 33993 | 2021-11-04 21:50:25 |
| R46.htm | 14650 | 2021-11-04 21:50:25 |
| R47.htm | 31508 | 2021-11-04 21:50:25 |
| R48.htm | 10698 | 2021-11-04 21:50:25 |
| R49.htm | 69735 | 2021-11-04 21:50:25 |
| R5.htm | 77100 | 2021-11-04 21:50:25 |
| R50.htm | 20269 | 2021-11-04 21:50:25 |
| R51.htm | 47253 | 2021-11-04 21:50:25 |
| R52.htm | 36776 | 2021-11-04 21:50:25 |
| R53.htm | 49750 | 2021-11-04 21:50:25 |
| R54.htm | 36928 | 2021-11-04 21:50:25 |
| R55.htm | 68620 | 2021-11-04 21:50:25 |
| R56.htm | 24754 | 2021-11-04 21:50:25 |
| R57.htm | 34774 | 2021-11-04 21:50:25 |
| R58.htm | 91395 | 2021-11-04 21:50:25 |
| R59.htm | 6180 | 2021-11-04 21:50:25 |
| R6.htm | 101863 | 2021-11-04 21:50:25 |
| R60.htm | 9619 | 2021-11-04 21:50:25 |
| R61.htm | 11314 | 2021-11-04 21:50:25 |
| R62.htm | 18537 | 2021-11-04 21:50:25 |
| R63.htm | 18094 | 2021-11-04 21:50:25 |
| R64.htm | 17447 | 2021-11-04 21:50:25 |
| R7.htm | 9328 | 2021-11-04 21:50:25 |
| R8.htm | 94374 | 2021-11-04 21:50:25 |
| R9.htm | 128625 | 2021-11-04 21:50:25 |
| report.css | 2767 | 2021-11-04 21:50:25 |
| Show.js | 1085 | 2021-11-04 21:50:25 |