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| 0001437749-20-017542-index.html | 2020-08-11 19:08:16 | |
| 0001437749-20-017542.txt | 2020-08-11 19:08:16 | |
 0001437749-20-017542-xbrl.zip | 82517 | 2020-08-11 19:08:16 |
| ex_187861.htm | 18701 | 2020-08-11 19:08:16 |
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| ex_198911.htm | 53475 | 2020-08-11 19:08:16 |
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| report.css | 2767 | 2020-08-11 19:08:16 |
| sfe-20200630.xml | 617341 | 2020-08-11 19:08:16 |
| sfe-20200630.xsd | 40954 | 2020-08-11 19:08:16 |
| sfe-20200630_cal.xml | 25842 | 2020-08-11 19:08:16 |
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| sfe-20200630_lab.xml | 201694 | 2020-08-11 19:08:16 |
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| sfe20200630_10q.htm | 819570 | 2020-08-11 19:08:16 |
| Show.js | 1085 | 2020-08-11 19:08:16 |