Parent Directory| Name | Size | Last Modified |
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| 0001104659-23-126909-index.html | 2023-12-18 16:39:18 | |
| 0001104659-23-126909.txt | 2023-12-18 16:39:18 | |
 0001104659-23-126909-xbrl.zip | 49692 | 2023-12-18 16:39:18 |
| FilingSummary.xml | 1636 | 2023-12-18 16:39:18 |
| Financial_Report.xlsx | 5698 | 2023-12-18 16:39:18 |
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| R1.htm | 39612 | 2023-12-18 16:39:18 |
| report.css | 2767 | 2023-12-18 16:39:18 |
| sfe-20231215.xsd | 3015 | 2023-12-18 16:39:18 |
| sfe-20231215_lab.xml | 34240 | 2023-12-18 16:39:18 |
| sfe-20231215_pre.xml | 22360 | 2023-12-18 16:39:18 |
| Show.js | 1085 | 2023-12-18 16:39:18 |
| tm2333091d1_8k.htm | 51864 | 2023-12-18 16:39:18 |
| tm2333091d1_8k_htm.xml | 3336 | 2023-12-18 16:39:18 |
| tm2333091d1_ex10-1.htm | 41704 | 2023-12-18 16:39:18 |
 tm2333091d1_ex10-1img002.jpg | 4443 | 2023-12-18 16:39:18 |
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| tm2333091d1_ex10-3.htm | 13518 | 2023-12-18 16:39:18 |
| tm2333091d1_ex10-4.htm | 43468 | 2023-12-18 16:39:18 |
| tm2333091d1_ex10-5.htm | 10313 | 2023-12-18 16:39:18 |
| tm2333091d1_ex99-1.htm | 14065 | 2023-12-18 16:39:18 |