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| 0000090168-22-000024-index.html | 2022-06-29 16:10:01 | |
| 0000090168-22-000024.txt | 2022-06-29 16:10:01 | |
 0000090168-22-000024-xbrl.zip | 22217 | 2022-06-29 16:10:01 |
| ex101ceocicandsevagmt2022f.htm | 66434 | 2022-06-29 16:10:01 |
| FilingSummary.xml | 1640 | 2022-06-29 16:10:01 |
| Financial_Report.xlsx | 5659 | 2022-06-29 16:10:01 |
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| R1.htm | 38510 | 2022-06-29 16:10:01 |
| report.css | 2767 | 2022-06-29 16:10:01 |
| Show.js | 1084 | 2022-06-29 16:10:01 |
| sif-20220629.htm | 40715 | 2022-06-29 16:10:01 |
| sif-20220629.xsd | 1878 | 2022-06-29 16:10:01 |
| sif-20220629_htm.xml | 11360 | 2022-06-29 16:10:01 |
| sif-20220629_lab.xml | 23832 | 2022-06-29 16:10:01 |
| sif-20220629_pre.xml | 12493 | 2022-06-29 16:10:01 |