Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000090168-20-000009-index-headers.html | 2020-02-18 16:02:07 | |
| 0000090168-20-000009-index.html | 2020-02-18 16:02:07 | |
| 0000090168-20-000009.txt | 2020-02-18 16:02:07 | |
 0000090168-20-000009-xbrl.zip | 163390 | 2020-02-18 16:02:07 |
| exhibit3112020q1.htm | 13025 | 2020-02-18 16:02:07 |
| exhibit3122020q1.htm | 13368 | 2020-02-18 16:02:07 |
| exhibit3212020q1.htm | 7736 | 2020-02-18 16:02:07 |
| exhibit3222020q1.htm | 8436 | 2020-02-18 16:02:07 |
| FilingSummary.xml | 30068 | 2020-02-18 16:02:07 |
| Financial_Report.xlsx | 60999 | 2020-02-18 16:02:07 |
| R1.htm | 27164 | 2020-02-18 16:02:07 |
| R10.htm | 12853 | 2020-02-18 16:02:07 |
| R11.htm | 145144 | 2020-02-18 16:02:07 |
| R12.htm | 53786 | 2020-02-18 16:02:07 |
| R13.htm | 6557 | 2020-02-18 16:02:07 |
| R14.htm | 18857 | 2020-02-18 16:02:07 |
| R15.htm | 13053 | 2020-02-18 16:02:07 |
| R16.htm | 51431 | 2020-02-18 16:02:07 |
| R17.htm | 25603 | 2020-02-18 16:02:07 |
| R18.htm | 18775 | 2020-02-18 16:02:07 |
| R19.htm | 19015 | 2020-02-18 16:02:07 |
| R2.htm | 50839 | 2020-02-18 16:02:07 |
| R20.htm | 14599 | 2020-02-18 16:02:07 |
| R21.htm | 12525 | 2020-02-18 16:02:07 |
| R22.htm | 91033 | 2020-02-18 16:02:07 |
| R23.htm | 41128 | 2020-02-18 16:02:07 |
| R24.htm | 16136 | 2020-02-18 16:02:07 |
| R25.htm | 49238 | 2020-02-18 16:02:07 |
| R26.htm | 20538 | 2020-02-18 16:02:07 |
| R27.htm | 20119 | 2020-02-18 16:02:07 |
| R28.htm | 10793 | 2020-02-18 16:02:07 |
| R29.htm | 10384 | 2020-02-18 16:02:07 |
| R3.htm | 15450 | 2020-02-18 16:02:07 |
| R30.htm | 13583 | 2020-02-18 16:02:07 |
| R31.htm | 7512 | 2020-02-18 16:02:07 |
| R32.htm | 13793 | 2020-02-18 16:02:07 |
| R33.htm | 17072 | 2020-02-18 16:02:07 |
| R34.htm | 9139 | 2020-02-18 16:02:07 |
| R35.htm | 13078 | 2020-02-18 16:02:07 |
| R36.htm | 43454 | 2020-02-18 16:02:07 |
| R37.htm | 39126 | 2020-02-18 16:02:07 |
| R38.htm | 22488 | 2020-02-18 16:02:07 |
| R39.htm | 96308 | 2020-02-18 16:02:07 |
| R4.htm | 83039 | 2020-02-18 16:02:07 |
| R40.htm | 19974 | 2020-02-18 16:02:07 |
| R41.htm | 4982 | 2020-02-18 16:02:07 |
| R42.htm | 15736 | 2020-02-18 16:02:07 |
| R43.htm | 13697 | 2020-02-18 16:02:07 |
| R44.htm | 54388 | 2020-02-18 16:02:07 |
| R45.htm | 26873 | 2020-02-18 16:02:07 |
| R46.htm | 19645 | 2020-02-18 16:02:07 |
| R47.htm | 4320 | 2020-02-18 16:02:07 |
| R48.htm | 18315 | 2020-02-18 16:02:07 |
| R49.htm | 14551 | 2020-02-18 16:02:07 |
| R5.htm | 15342 | 2020-02-18 16:02:07 |
| R50.htm | 17848 | 2020-02-18 16:02:07 |
| R6.htm | 92404 | 2020-02-18 16:02:07 |
| R7.htm | 24705 | 2020-02-18 16:02:07 |
| R8.htm | 28382 | 2020-02-18 16:02:07 |
| R9.htm | 15964 | 2020-02-18 16:02:07 |
| R9999.htm | 6155 | 2020-02-18 16:02:07 |
| report.css | 2767 | 2020-02-18 16:02:07 |
| Show.js | 1085 | 2020-02-18 16:02:07 |
| sif-20191231.xml | 830637 | 2020-02-18 16:02:07 |
| sif-20191231.xsd | 44634 | 2020-02-18 16:02:07 |
| sif-20191231_cal.xml | 95707 | 2020-02-18 16:02:07 |
| sif-20191231_def.xml | 158141 | 2020-02-18 16:02:07 |
| sif-20191231_lab.xml | 590614 | 2020-02-18 16:02:07 |
| sif-20191231_pre.xml | 324026 | 2020-02-18 16:02:07 |
| sif1231201910q2020.htm | 686023 | 2020-02-18 16:02:07 |