Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000907254-18-000017-index-headers.html | 2018-02-27 16:50:31 | |
| 0000907254-18-000017-index.html | 2018-02-27 16:50:31 | |
| 0000907254-18-000017.txt | 2018-02-27 16:50:31 | |
 0000907254-18-000017-xbrl.zip | 400434 | 2018-02-27 16:50:31 |
 a2017orgstructurea01.jpg | 52933 | 2018-02-27 16:50:31 |
| bfs-12312017x10k.htm | 3950113 | 2018-02-27 16:50:31 |
| bfs-12312017xexhibit10q.htm | 97907 | 2018-02-27 16:50:31 |
| bfs-12312017xexhibit21.htm | 6997 | 2018-02-27 16:50:31 |
| bfs-12312017xexhibit23.htm | 8874 | 2018-02-27 16:50:31 |
| bfs-12312017xexhibit31.htm | 25918 | 2018-02-27 16:50:31 |
| bfs-12312017xexhibit32.htm | 10502 | 2018-02-27 16:50:31 |
 bfs-1231201_chartx36673a02.jpg | 83022 | 2018-02-27 16:50:31 |
| bfs-20171231.xml | 4439429 | 2018-02-27 16:50:31 |
| bfs-20171231.xsd | 114431 | 2018-02-27 16:50:31 |
| bfs-20171231_cal.xml | 114739 | 2018-02-27 16:50:31 |
| bfs-20171231_def.xml | 441284 | 2018-02-27 16:50:31 |
| bfs-20171231_lab.xml | 1153972 | 2018-02-27 16:50:31 |
| bfs-20171231_pre.xml | 668637 | 2018-02-27 16:50:31 |
| FilingSummary.xml | 44094 | 2018-02-27 16:50:31 |
| Financial_Report.xlsx | 139738 | 2018-02-27 16:50:31 |
| R1.htm | 29999 | 2018-02-27 16:50:31 |
| R10.htm | 100291 | 2018-02-27 16:50:31 |
| R11.htm | 64520 | 2018-02-27 16:50:31 |
| R12.htm | 8394 | 2018-02-27 16:50:31 |
| R13.htm | 267903 | 2018-02-27 16:50:31 |
| R14.htm | 15189 | 2018-02-27 16:50:31 |
| R15.htm | 8653 | 2018-02-27 16:50:31 |
| R16.htm | 7999 | 2018-02-27 16:50:31 |
| R17.htm | 16351 | 2018-02-27 16:50:31 |
| R18.htm | 385611 | 2018-02-27 16:50:31 |
| R19.htm | 24153 | 2018-02-27 16:50:31 |
| R2.htm | 75276 | 2018-02-27 16:50:31 |
| R20.htm | 5275 | 2018-02-27 16:50:31 |
| R21.htm | 110605 | 2018-02-27 16:50:31 |
| R22.htm | 50568 | 2018-02-27 16:50:31 |
| R23.htm | 160221 | 2018-02-27 16:50:31 |
| R24.htm | 9984 | 2018-02-27 16:50:31 |
| R25.htm | 550081 | 2018-02-27 16:50:31 |
| R26.htm | 94063 | 2018-02-27 16:50:31 |
| R27.htm | 23325 | 2018-02-27 16:50:31 |
| R28.htm | 51541 | 2018-02-27 16:50:31 |
| R29.htm | 46233 | 2018-02-27 16:50:31 |
| R3.htm | 17122 | 2018-02-27 16:50:31 |
| R30.htm | 251788 | 2018-02-27 16:50:31 |
| R31.htm | 12773 | 2018-02-27 16:50:31 |
| R32.htm | 356743 | 2018-02-27 16:50:31 |
| R33.htm | 18300 | 2018-02-27 16:50:31 |
| R34.htm | 104140 | 2018-02-27 16:50:31 |
| R35.htm | 50528 | 2018-02-27 16:50:31 |
| R36.htm | 159633 | 2018-02-27 16:50:31 |
| R37.htm | 13272 | 2018-02-27 16:50:31 |
| R38.htm | 85463 | 2018-02-27 16:50:31 |
| R39.htm | 8876 | 2018-02-27 16:50:31 |
| R4.htm | 59529 | 2018-02-27 16:50:31 |
| R40.htm | 10668 | 2018-02-27 16:50:31 |
| R41.htm | 15949 | 2018-02-27 16:50:31 |
| R42.htm | 126917 | 2018-02-27 16:50:31 |
| R43.htm | 35581 | 2018-02-27 16:50:31 |
| R44.htm | 36901 | 2018-02-27 16:50:31 |
| R45.htm | 15523 | 2018-02-27 16:50:31 |
| R46.htm | 179358 | 2018-02-27 16:50:31 |
| R47.htm | 110878 | 2018-02-27 16:50:31 |
| R48.htm | 230079 | 2018-02-27 16:50:31 |
| R49.htm | 51310 | 2018-02-27 16:50:31 |
| R5.htm | 21475 | 2018-02-27 16:50:31 |
| R50.htm | 10058 | 2018-02-27 16:50:31 |
| R51.htm | 9287 | 2018-02-27 16:50:31 |
| R52.htm | 15992 | 2018-02-27 16:50:31 |
| R53.htm | 21869 | 2018-02-27 16:50:31 |
| R54.htm | 19495 | 2018-02-27 16:50:31 |
| R55.htm | 27693 | 2018-02-27 16:50:31 |
| R56.htm | 251286 | 2018-02-27 16:50:31 |
| R57.htm | 203011 | 2018-02-27 16:50:31 |
| R58.htm | 41261 | 2018-02-27 16:50:31 |
| R59.htm | 22912 | 2018-02-27 16:50:31 |
| R6.htm | 75708 | 2018-02-27 16:50:31 |
| R60.htm | 9671 | 2018-02-27 16:50:31 |
| R61.htm | 34797 | 2018-02-27 16:50:31 |
| R62.htm | 55702 | 2018-02-27 16:50:31 |
| R63.htm | 19857 | 2018-02-27 16:50:31 |
| R64.htm | 4125 | 2018-02-27 16:50:31 |
| R65.htm | 76823 | 2018-02-27 16:50:31 |
| R66.htm | 49340 | 2018-02-27 16:50:31 |
| R67.htm | 390313 | 2018-02-27 16:50:31 |
| R68.htm | 10635 | 2018-02-27 16:50:31 |
| R69.htm | 4939 | 2018-02-27 16:50:31 |
| R7.htm | 14774 | 2018-02-27 16:50:31 |
| R70.htm | 25302 | 2018-02-27 16:50:31 |
| R8.htm | 98160 | 2018-02-27 16:50:31 |
| R9.htm | 28360 | 2018-02-27 16:50:31 |
| report.css | 2767 | 2018-02-27 16:50:31 |
| Show.js | 1410 | 2018-02-27 16:50:31 |