Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-22-012275-index-headers.html | 2022-05-04 16:07:36 | |
| 0001628280-22-012275-index.html | 2022-05-04 16:07:36 | |
| 0001628280-22-012275.txt | 2022-05-04 16:07:36 | |
 0001628280-22-012275-xbrl.zip | 75011 | 2022-05-04 16:07:36 |
| ex991-q12022erss.htm | 1479734 | 2022-05-04 16:07:36 |
| FilingSummary.xml | 1793 | 2022-05-04 16:07:36 |
| Financial_Report.xlsx | 5868 | 2022-05-04 16:07:36 |
 image0a93a.jpg | 9612 | 2022-05-04 16:07:36 |
| MetaLinks.json | 23507 | 2022-05-04 16:07:36 |
 nsa-2021ar_editablecoverpda.jpg | 361428 | 2022-05-04 16:07:36 |
| nsa-20220504.htm | 40165 | 2022-05-04 16:07:36 |
| nsa-20220504.xsd | 2561 | 2022-05-04 16:07:36 |
| nsa-20220504_def.xml | 17493 | 2022-05-04 16:07:36 |
| nsa-20220504_htm.xml | 14038 | 2022-05-04 16:07:36 |
| nsa-20220504_lab.xml | 33079 | 2022-05-04 16:07:36 |
| nsa-20220504_pre.xml | 17772 | 2022-05-04 16:07:36 |
 q12022tombstonea.jpg | 96653 | 2022-05-04 16:07:36 |
| R1.htm | 44541 | 2022-05-04 16:07:36 |
| report.css | 2767 | 2022-05-04 16:07:36 |
| Show.js | 1085 | 2022-05-04 16:07:36 |