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| 0000086115-17-000093-index.html | 2017-07-27 15:26:19 | |
| 0000086115-17-000093.txt | 2017-07-27 15:26:19 | |
 0000086115-17-000093-xbrl.zip | 132005 | 2017-07-27 15:26:19 |
| FilingSummary.xml | 25685 | 2017-07-27 15:26:19 |
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| report.css | 2767 | 2017-07-27 15:26:19 |
| sfe-20170630.xml | 702321 | 2017-07-27 15:26:19 |
| sfe-20170630.xsd | 40675 | 2017-07-27 15:26:19 |
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| sfe-2017xq2.htm | 747812 | 2017-07-27 15:26:19 |
| sfe-2017xq2xex311.htm | 22946 | 2017-07-27 15:26:19 |
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| sfe-2017xq2xex322.htm | 8964 | 2017-07-27 15:26:19 |
| Show.js | 1410 | 2017-07-27 15:26:19 |