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|---|---|---|
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| 0000809802-20-000008-index.html | 2020-05-18 12:26:57 | |
| 0000809802-20-000008.txt | 2020-05-18 12:26:57 | |
 0000809802-20-000008-xbrl.zip | 53996 | 2020-05-18 12:26:57 |
 BarChart1.png | 31973 | 2020-05-18 12:26:57 |
 BarChart2.png | 32333 | 2020-05-18 12:26:57 |
| FilingSummary.xml | 4782 | 2020-05-18 12:26:57 |
| nlei-20200429.xml | 59434 | 2020-05-18 12:26:57 |
| nlei-20200429.xsd | 13092 | 2020-05-18 12:26:57 |
| nlei-20200429_cal.xml | 4739 | 2020-05-18 12:26:57 |
| nlei-20200429_def.xml | 426779 | 2020-05-18 12:26:57 |
| nlei-20200429_lab.xml | 155479 | 2020-05-18 12:26:57 |
| nlei-20200429_pre.xml | 338956 | 2020-05-18 12:26:57 |
| R1.htm | 18256 | 2020-05-18 12:26:57 |
| R15.htm | 169361 | 2020-05-18 12:26:57 |
| R16.htm | 7488 | 2020-05-18 12:26:57 |
| R2.htm | 108757 | 2020-05-18 12:26:57 |
| R8.htm | 167587 | 2020-05-18 12:26:57 |
| R9.htm | 110249 | 2020-05-18 12:26:57 |
| report.css | 2766 | 2020-05-18 12:26:57 |
| Show.js | 1085 | 2020-05-18 12:26:57 |
| xbrlnle.htm | 21957 | 2020-05-18 12:26:57 |