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| 0000090168-19-000008.txt | 2019-02-19 17:14:34 | |
 0000090168-19-000008-xbrl.zip | 136862 | 2019-02-19 17:14:34 |
| exhibit3112019q1.htm | 13014 | 2019-02-19 17:14:34 |
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| report.css | 2767 | 2019-02-19 17:14:34 |
| Show.js | 1085 | 2019-02-19 17:14:34 |
| sif-20181231.xml | 739590 | 2019-02-19 17:14:34 |
| sif-20181231.xsd | 33918 | 2019-02-19 17:14:34 |
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| sif1231201810q2019.htm | 575907 | 2019-02-19 17:14:34 |