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|---|---|---|
 0001618563-21-000047-index-headers.html | 2021-05-04 16:06:43 | |
| 0001618563-21-000047-index.html | 2021-05-04 16:06:43 | |
| 0001618563-21-000047.txt | 2021-05-04 16:06:43 | |
 0001618563-21-000047-xbrl.zip | 72576 | 2021-05-04 16:06:43 |
 capture1211.jpg | 75408 | 2021-05-04 16:06:43 |
| ex991-q12021erss.htm | 1349709 | 2021-05-04 16:06:43 |
| FilingSummary.xml | 1962 | 2021-05-04 16:06:43 |
| Financial_Report.xlsx | 5868 | 2021-05-04 16:06:43 |
 image0a931.jpg | 9612 | 2021-05-04 16:06:43 |
| MetaLinks.json | 24256 | 2021-05-04 16:06:43 |
| nsa-20210504.htm | 38983 | 2021-05-04 16:06:43 |
| nsa-20210504.xsd | 2838 | 2021-05-04 16:06:43 |
| nsa-20210504_cal.xml | 836 | 2021-05-04 16:06:43 |
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| nsa-20210504_lab.xml | 33243 | 2021-05-04 16:06:43 |
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 nsa-_editablexfrontxcoverv.jpg | 326447 | 2021-05-04 16:06:43 |
| R1.htm | 44436 | 2021-05-04 16:06:43 |
| report.css | 2767 | 2021-05-04 16:06:43 |
| Show.js | 1085 | 2021-05-04 16:06:43 |