Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001635984-23-000013-index-headers.html | 2023-04-28 13:00:19 | |
| 0001635984-23-000013-index.html | 2023-04-28 13:00:19 | |
| 0001635984-23-000013.txt | 2023-04-28 13:00:19 | |
 0001635984-23-000013-xbrl.zip | 370822 | 2023-04-28 13:00:19 |
| FilingSummary.xml | 2436 | 2023-04-28 13:00:19 |
| Financial_Report.xlsx | 10981 | 2023-04-28 13:00:19 |
| MetaLinks.json | 150866 | 2023-04-28 13:00:19 |
| nwli-20230428.htm | 1200134 | 2023-04-28 13:00:19 |
| nwli-20230428.xsd | 4957 | 2023-04-28 13:00:19 |
| nwli-20230428_def.xml | 7017 | 2023-04-28 13:00:19 |
 nwli-20230428_g1.jpg | 168479 | 2023-04-28 13:00:19 |
 nwli-20230428_g2.jpg | 156539 | 2023-04-28 13:00:19 |
 nwli-20230428_g3.jpg | 142353 | 2023-04-28 13:00:19 |
| nwli-20230428_htm.xml | 181231 | 2023-04-28 13:00:19 |
| nwli-20230428_lab.xml | 11329 | 2023-04-28 13:00:19 |
| nwli-20230428_pre.xml | 5965 | 2023-04-28 13:00:19 |
| R1.htm | 10855 | 2023-04-28 13:00:19 |
| R2.htm | 172097 | 2023-04-28 13:00:19 |
| report.css | 2767 | 2023-04-28 13:00:19 |
| Show.js | 1085 | 2023-04-28 13:00:19 |