Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-22-020306-index-headers.html | 2022-08-12 13:52:51 | |
| 0001437749-22-020306-index.html | 2022-08-12 13:52:51 | |
| 0001437749-22-020306.txt | 2022-08-12 13:52:51 | |
 0001437749-22-020306-xbrl.zip | 111689 | 2022-08-12 13:52:51 |
| ex_380086.htm | 18693 | 2022-08-12 13:52:51 |
| ex_380087.htm | 18837 | 2022-08-12 13:52:51 |
| ex_380088.htm | 7111 | 2022-08-12 13:52:51 |
| ex_380089.htm | 7195 | 2022-08-12 13:52:51 |
| FilingSummary.xml | 25822 | 2022-08-12 13:52:51 |
| Financial_Report.xlsx | 46194 | 2022-08-12 13:52:51 |
| MetaLinks.json | 378761 | 2022-08-12 13:52:51 |
| R1.htm | 52391 | 2022-08-12 13:52:51 |
| R10.htm | 36761 | 2022-08-12 13:52:51 |
| R11.htm | 16345 | 2022-08-12 13:52:51 |
| R12.htm | 8427 | 2022-08-12 13:52:51 |
| R13.htm | 37378 | 2022-08-12 13:52:51 |
| R14.htm | 9916 | 2022-08-12 13:52:51 |
| R15.htm | 29748 | 2022-08-12 13:52:51 |
| R16.htm | 11058 | 2022-08-12 13:52:51 |
| R17.htm | 23456 | 2022-08-12 13:52:51 |
| R18.htm | 46145 | 2022-08-12 13:52:51 |
| R19.htm | 33364 | 2022-08-12 13:52:51 |
| R2.htm | 101761 | 2022-08-12 13:52:51 |
| R20.htm | 13879 | 2022-08-12 13:52:51 |
| R21.htm | 32716 | 2022-08-12 13:52:51 |
| R22.htm | 20349 | 2022-08-12 13:52:51 |
| R23.htm | 10561 | 2022-08-12 13:52:51 |
| R24.htm | 2599 | 2022-08-12 13:52:51 |
| R25.htm | 16480 | 2022-08-12 13:52:51 |
| R26.htm | 17356 | 2022-08-12 13:52:51 |
| R27.htm | 31077 | 2022-08-12 13:52:51 |
| R28.htm | 9240 | 2022-08-12 13:52:51 |
| R29.htm | 4460 | 2022-08-12 13:52:51 |
| R3.htm | 15971 | 2022-08-12 13:52:51 |
| R30.htm | 17717 | 2022-08-12 13:52:51 |
| R31.htm | 8478 | 2022-08-12 13:52:51 |
| R32.htm | 5169 | 2022-08-12 13:52:51 |
| R33.htm | 14492 | 2022-08-12 13:52:51 |
| R34.htm | 42195 | 2022-08-12 13:52:51 |
| R35.htm | 3428 | 2022-08-12 13:52:51 |
| R36.htm | 13619 | 2022-08-12 13:52:51 |
| R37.htm | 34190 | 2022-08-12 13:52:51 |
| R38.htm | 15413 | 2022-08-12 13:52:51 |
| R4.htm | 56232 | 2022-08-12 13:52:51 |
| R5.htm | 27203 | 2022-08-12 13:52:51 |
| R6.htm | 60445 | 2022-08-12 13:52:51 |
| R7.htm | 21464 | 2022-08-12 13:52:51 |
| R8.htm | 46228 | 2022-08-12 13:52:51 |
| R9.htm | 6379 | 2022-08-12 13:52:51 |
| report.css | 2767 | 2022-08-12 13:52:51 |
| sfe-20220630.xsd | 37112 | 2022-08-12 13:52:51 |
| sfe-20220630_cal.xml | 28371 | 2022-08-12 13:52:51 |
| sfe-20220630_def.xml | 225019 | 2022-08-12 13:52:51 |
| sfe-20220630_lab.xml | 192856 | 2022-08-12 13:52:51 |
| sfe-20220630_pre.xml | 245404 | 2022-08-12 13:52:51 |
| sfe20220630_10q.htm | 862711 | 2022-08-12 13:52:51 |
| sfe20220630_10q_htm.xml | 519733 | 2022-08-12 13:52:51 |
| Show.js | 1085 | 2022-08-12 13:52:51 |