Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-19-029678-index-headers.html | 2019-08-07 08:17:27 | |
| 0001564590-19-029678-index.html | 2019-08-07 08:17:27 | |
| 0001564590-19-029678.txt | 2019-08-07 08:17:27 | |
 0001564590-19-029678-xbrl.zip | 471032 | 2019-08-07 08:17:27 |
| FilingSummary.xml | 86509 | 2019-08-07 08:17:27 |
| Financial_Report.xlsx | 175750 | 2019-08-07 08:17:27 |
| MetaLinks.json | 1202573 | 2019-08-07 08:17:27 |
| R1.htm | 42305 | 2019-08-07 08:17:27 |
| R10.htm | 8821 | 2019-08-07 08:17:27 |
| R100.htm | 19995 | 2019-08-07 08:17:27 |
| R101.htm | 27057 | 2019-08-07 08:17:27 |
| R102.htm | 54806 | 2019-08-07 08:17:27 |
| R103.htm | 9136 | 2019-08-07 08:17:27 |
| R104.htm | 25124 | 2019-08-07 08:17:27 |
| R105.htm | 68786 | 2019-08-07 08:17:27 |
| R106.htm | 20219 | 2019-08-07 08:17:27 |
| R107.htm | 8166 | 2019-08-07 08:17:27 |
| R108.htm | 17130 | 2019-08-07 08:17:27 |
| R109.htm | 4531 | 2019-08-07 08:17:27 |
| R11.htm | 17692 | 2019-08-07 08:17:27 |
| R110.htm | 11401 | 2019-08-07 08:17:27 |
| R111.htm | 12769 | 2019-08-07 08:17:27 |
| R112.htm | 26936 | 2019-08-07 08:17:27 |
| R113.htm | 6736 | 2019-08-07 08:17:27 |
| R114.htm | 40302 | 2019-08-07 08:17:27 |
| R115.htm | 15045 | 2019-08-07 08:17:27 |
| R116.htm | 3902 | 2019-08-07 08:17:27 |
| R12.htm | 17131 | 2019-08-07 08:17:27 |
| R13.htm | 43032 | 2019-08-07 08:17:27 |
| R14.htm | 1267701 | 2019-08-07 08:17:27 |
| R15.htm | 92782 | 2019-08-07 08:17:27 |
| R16.htm | 645224 | 2019-08-07 08:17:27 |
| R17.htm | 1170375 | 2019-08-07 08:17:27 |
| R18.htm | 145013 | 2019-08-07 08:17:27 |
| R19.htm | 9549 | 2019-08-07 08:17:27 |
| R2.htm | 114111 | 2019-08-07 08:17:27 |
| R20.htm | 49432 | 2019-08-07 08:17:27 |
| R21.htm | 73721 | 2019-08-07 08:17:27 |
| R22.htm | 82114 | 2019-08-07 08:17:27 |
| R23.htm | 235255 | 2019-08-07 08:17:27 |
| R24.htm | 8279 | 2019-08-07 08:17:27 |
| R25.htm | 8552 | 2019-08-07 08:17:27 |
| R26.htm | 168644 | 2019-08-07 08:17:27 |
| R27.htm | 43276 | 2019-08-07 08:17:27 |
| R28.htm | 497934 | 2019-08-07 08:17:27 |
| R29.htm | 102795 | 2019-08-07 08:17:27 |
| R3.htm | 16976 | 2019-08-07 08:17:27 |
| R30.htm | 13445 | 2019-08-07 08:17:27 |
| R31.htm | 15460 | 2019-08-07 08:17:27 |
| R32.htm | 143827 | 2019-08-07 08:17:27 |
| R33.htm | 84736 | 2019-08-07 08:17:27 |
| R34.htm | 8941 | 2019-08-07 08:17:27 |
| R35.htm | 15694 | 2019-08-07 08:17:27 |
| R36.htm | 5557 | 2019-08-07 08:17:27 |
| R37.htm | 24848 | 2019-08-07 08:17:27 |
| R38.htm | 27241 | 2019-08-07 08:17:27 |
| R39.htm | 43534 | 2019-08-07 08:17:27 |
| R4.htm | 85190 | 2019-08-07 08:17:27 |
| R40.htm | 1248199 | 2019-08-07 08:17:27 |
| R41.htm | 90950 | 2019-08-07 08:17:27 |
| R42.htm | 644921 | 2019-08-07 08:17:27 |
| R43.htm | 1161216 | 2019-08-07 08:17:27 |
| R44.htm | 144547 | 2019-08-07 08:17:27 |
| R45.htm | 54192 | 2019-08-07 08:17:27 |
| R46.htm | 72444 | 2019-08-07 08:17:27 |
| R47.htm | 76090 | 2019-08-07 08:17:27 |
| R48.htm | 237784 | 2019-08-07 08:17:27 |
| R49.htm | 162860 | 2019-08-07 08:17:27 |
| R5.htm | 31184 | 2019-08-07 08:17:27 |
| R50.htm | 41532 | 2019-08-07 08:17:27 |
| R51.htm | 487762 | 2019-08-07 08:17:27 |
| R52.htm | 102060 | 2019-08-07 08:17:27 |
| R53.htm | 143861 | 2019-08-07 08:17:27 |
| R54.htm | 82998 | 2019-08-07 08:17:27 |
| R55.htm | 5832 | 2019-08-07 08:17:27 |
| R56.htm | 17272 | 2019-08-07 08:17:27 |
| R57.htm | 11816 | 2019-08-07 08:17:27 |
| R58.htm | 10531 | 2019-08-07 08:17:27 |
| R59.htm | 16751 | 2019-08-07 08:17:27 |
| R6.htm | 13699 | 2019-08-07 08:17:27 |
| R60.htm | 94268 | 2019-08-07 08:17:27 |
| R61.htm | 29452 | 2019-08-07 08:17:27 |
| R62.htm | 58364 | 2019-08-07 08:17:27 |
| R63.htm | 50123 | 2019-08-07 08:17:27 |
| R64.htm | 54790 | 2019-08-07 08:17:27 |
| R65.htm | 7400 | 2019-08-07 08:17:27 |
| R66.htm | 52076 | 2019-08-07 08:17:27 |
| R67.htm | 42435 | 2019-08-07 08:17:27 |
| R68.htm | 64685 | 2019-08-07 08:17:27 |
| R69.htm | 62006 | 2019-08-07 08:17:27 |
| R7.htm | 88557 | 2019-08-07 08:17:27 |
| R70.htm | 53102 | 2019-08-07 08:17:27 |
| R71.htm | 46219 | 2019-08-07 08:17:27 |
| R72.htm | 40674 | 2019-08-07 08:17:27 |
| R73.htm | 24016 | 2019-08-07 08:17:27 |
| R74.htm | 55127 | 2019-08-07 08:17:27 |
| R75.htm | 29901 | 2019-08-07 08:17:27 |
| R76.htm | 56575 | 2019-08-07 08:17:27 |
| R77.htm | 43470 | 2019-08-07 08:17:27 |
| R78.htm | 25495 | 2019-08-07 08:17:27 |
| R79.htm | 23041 | 2019-08-07 08:17:27 |
| R8.htm | 6524 | 2019-08-07 08:17:27 |
| R80.htm | 19202 | 2019-08-07 08:17:27 |
| R81.htm | 16980 | 2019-08-07 08:17:27 |
| R82.htm | 37765 | 2019-08-07 08:17:27 |
| R83.htm | 23231 | 2019-08-07 08:17:27 |
| R84.htm | 27012 | 2019-08-07 08:17:27 |
| R85.htm | 12667 | 2019-08-07 08:17:27 |
| R86.htm | 12911 | 2019-08-07 08:17:27 |
| R87.htm | 11100 | 2019-08-07 08:17:27 |
| R88.htm | 18705 | 2019-08-07 08:17:27 |
| R89.htm | 10890 | 2019-08-07 08:17:27 |
| R9.htm | 139477 | 2019-08-07 08:17:27 |
| R90.htm | 6413 | 2019-08-07 08:17:27 |
| R91.htm | 9652 | 2019-08-07 08:17:27 |
| R92.htm | 42638 | 2019-08-07 08:17:27 |
| R93.htm | 7931 | 2019-08-07 08:17:27 |
| R94.htm | 33569 | 2019-08-07 08:17:27 |
| R95.htm | 9340 | 2019-08-07 08:17:27 |
| R96.htm | 16147 | 2019-08-07 08:17:27 |
| R97.htm | 69429 | 2019-08-07 08:17:27 |
| R98.htm | 24317 | 2019-08-07 08:17:27 |
| R99.htm | 17926 | 2019-08-07 08:17:27 |
| report.css | 2768 | 2019-08-07 08:17:27 |
| sf-10q_20190630.htm | 10472114 | 2019-08-07 08:17:27 |
| sf-10q_20190630_htm.xml | 11225845 | 2019-08-07 08:17:27 |
| sf-20190630.xsd | 113290 | 2019-08-07 08:17:27 |
| sf-20190630_cal.xml | 178449 | 2019-08-07 08:17:27 |
| sf-20190630_def.xml | 455981 | 2019-08-07 08:17:27 |
| sf-20190630_lab.xml | 859936 | 2019-08-07 08:17:27 |
| sf-20190630_pre.xml | 744508 | 2019-08-07 08:17:27 |
| sf-ex311_9.htm | 17162 | 2019-08-07 08:17:27 |
| sf-ex312_8.htm | 17160 | 2019-08-07 08:17:27 |
| sf-ex321_7.htm | 5687 | 2019-08-07 08:17:27 |
| sf-ex322_6.htm | 5666 | 2019-08-07 08:17:27 |
| Show.js | 1086 | 2019-08-07 08:17:27 |