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| 0001181749-20-000020-index.html | 2020-06-15 14:08:05 | |
| 0001181749-20-000020.txt | 2020-06-15 14:08:05 | |
 0001181749-20-000020-xbrl.zip | 111668 | 2020-06-15 14:08:05 |
| FilingSummary.xml | 24222 | 2020-06-15 14:08:05 |
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| gfe-20200430.xsd | 36412 | 2020-06-15 14:08:05 |
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| gfe-20200430ex312ba3ecd.htm | 20969 | 2020-06-15 14:08:05 |
| gfe-20200430ex3212e019f.htm | 13111 | 2020-06-15 14:08:05 |
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| gfe-20200430x10q.htm | 2074037 | 2020-06-15 14:08:05 |
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| gfe-20200430_def.xml | 146491 | 2020-06-15 14:08:05 |
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| report.css | 2767 | 2020-06-15 14:08:05 |
| Show.js | 1085 | 2020-06-15 14:08:05 |