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|---|---|---|
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| 0000090168-23-000031-index.html | 2023-07-06 16:30:01 | |
| 0000090168-23-000031.txt | 2023-07-06 16:30:01 | |
 0000090168-23-000031-xbrl.zip | 169032 | 2023-07-06 16:30:01 |
| exhibit3112023q1.htm | 10995 | 2023-07-06 16:30:01 |
| exhibit3122023q1.htm | 10940 | 2023-07-06 16:30:01 |
| exhibit3212023q1.htm | 5915 | 2023-07-06 16:30:01 |
| exhibit3222023q1.htm | 5929 | 2023-07-06 16:30:01 |
| FilingSummary.xml | 28780 | 2023-07-06 16:30:01 |
| Financial_Report.xlsx | 69542 | 2023-07-06 16:30:01 |
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| R1.htm | 50167 | 2023-07-06 16:30:01 |
| R10.htm | 6030 | 2023-07-06 16:30:01 |
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| R31.htm | 10620 | 2023-07-06 16:30:01 |
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| R8.htm | 31961 | 2023-07-06 16:30:01 |
| R9.htm | 12757 | 2023-07-06 16:30:01 |
| report.css | 2767 | 2023-07-06 16:30:01 |
| Show.js | 1085 | 2023-07-06 16:30:01 |
| sif-20221231.htm | 747036 | 2023-07-06 16:30:01 |
| sif-20221231.xsd | 37194 | 2023-07-06 16:30:01 |
| sif-20221231_cal.xml | 75985 | 2023-07-06 16:30:01 |
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| sif-20221231_lab.xml | 490797 | 2023-07-06 16:30:01 |
| sif-20221231_pre.xml | 299129 | 2023-07-06 16:30:01 |