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| 0001437749-23-000766.txt | 2023-01-10 08:00:13 | |
 0001437749-23-000766-xbrl.zip | 12865 | 2023-01-10 08:00:13 |
 a01.jpg | 3779 | 2023-01-10 08:00:13 |
| ex_462528.htm | 13132 | 2023-01-10 08:00:13 |
| FilingSummary.xml | 1764 | 2023-01-10 08:00:13 |
| Financial_Report.xlsx | 5691 | 2023-01-10 08:00:13 |
| MetaLinks.json | 19419 | 2023-01-10 08:00:13 |
| R1.htm | 38353 | 2023-01-10 08:00:13 |
| report.css | 2767 | 2023-01-10 08:00:13 |
| sfe-20230110.xsd | 3592 | 2023-01-10 08:00:13 |
| sfe-20230110_def.xml | 11528 | 2023-01-10 08:00:13 |
| sfe-20230110_lab.xml | 15413 | 2023-01-10 08:00:13 |
| sfe-20230110_pre.xml | 11684 | 2023-01-10 08:00:13 |
| sfe20230109_8k.htm | 21862 | 2023-01-10 08:00:13 |
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| Show.js | 1085 | 2023-01-10 08:00:13 |