Parent Directory| Name | Size | Last Modified |
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 0001618563-20-000122-index-headers.html | 2020-09-25 16:14:20 | |
| 0001618563-20-000122-index.html | 2020-09-25 16:14:20 | |
| 0001618563-20-000122.txt | 2020-09-25 16:14:20 | |
 0001618563-20-000122-xbrl.zip | 134869 | 2020-09-25 16:14:20 |
| ex11underwritingagreem.htm | 446857 | 2020-09-25 16:14:20 |
| ex12-msconfirmation.htm | 240896 | 2020-09-25 16:14:20 |
| ex13-citiconfirmation.htm | 266263 | 2020-09-25 16:14:20 |
| ex51opinionofcliffordc.htm | 15747 | 2020-09-25 16:14:20 |
| ex81taxopinionofcliffo.htm | 23733 | 2020-09-25 16:14:20 |
| FilingSummary.xml | 2492 | 2020-09-25 16:14:20 |
| Financial_Report.xlsx | 5645 | 2020-09-25 16:14:20 |
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| nsa-20200922.htm | 58815 | 2020-09-25 16:14:20 |
| nsa-20200922.xsd | 2838 | 2020-09-25 16:14:20 |
| nsa-20200922_cal.xml | 836 | 2020-09-25 16:14:20 |
| nsa-20200922_def.xml | 17656 | 2020-09-25 16:14:20 |
| nsa-20200922_htm.xml | 13995 | 2020-09-25 16:14:20 |
| nsa-20200922_lab.xml | 33243 | 2020-09-25 16:14:20 |
| nsa-20200922_pre.xml | 17936 | 2020-09-25 16:14:20 |
| R1.htm | 43929 | 2020-09-25 16:14:20 |
| report.css | 2766 | 2020-09-25 16:14:20 |
| Show.js | 1085 | 2020-09-25 16:14:20 |