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| 0000898432-20-000408-index.html | 2020-03-26 13:46:23 | |
| 0000898432-20-000408.txt | 2020-03-26 13:46:23 | |
 0000898432-20-000408-xbrl.zip | 215612 | 2020-03-26 13:46:23 |
| a497.htm | 1817 | 2020-03-26 13:46:23 |
| FilingSummary.xml | 27263 | 2020-03-26 13:46:23 |
| Financial_Report.xlsx | 28808 | 2020-03-26 13:46:23 |
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| nbef-20200313.xsd | 49119 | 2020-03-26 13:46:23 |
| nbef-20200313_def.xml | 1892306 | 2020-03-26 13:46:23 |
| nbef-20200313_lab.xml | 284343 | 2020-03-26 13:46:23 |
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| R9.htm | 9331 | 2020-03-26 13:46:23 |
| report.css | 2767 | 2020-03-26 13:46:23 |
| Show.js | 1085 | 2020-03-26 13:46:23 |