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|---|---|---|
 0000071829-21-000114-index-headers.html | 2021-08-03 16:27:42 | |
| 0000071829-21-000114-index.html | 2021-08-03 16:27:42 | |
| 0000071829-21-000114.txt | 2021-08-03 16:27:42 | |
 0000071829-21-000114-xbrl.zip | 40054 | 2021-08-03 16:27:42 |
| a2021q28k-erex991.htm | 263256 | 2021-08-03 16:27:42 |
 ex99-1img001a10.jpg | 5552 | 2021-08-03 16:27:42 |
| FilingSummary.xml | 1797 | 2021-08-03 16:27:42 |
| Financial_Report.xlsx | 5722 | 2021-08-03 16:27:42 |
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| nr-20210803.htm | 40359 | 2021-08-03 16:27:42 |
| nr-20210803.xsd | 2300 | 2021-08-03 16:27:42 |
| nr-20210803_def.xml | 6164 | 2021-08-03 16:27:42 |
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| nr-20210803_htm.xml | 12087 | 2021-08-03 16:27:42 |
| nr-20210803_lab.xml | 30918 | 2021-08-03 16:27:42 |
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| R1.htm | 43040 | 2021-08-03 16:27:42 |
| report.css | 2767 | 2021-08-03 16:27:42 |
| Show.js | 1085 | 2021-08-03 16:27:42 |