Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000907254-21-000018-index-headers.html | 2021-02-25 17:04:56 | |
| 0000907254-21-000018-index.html | 2021-02-25 17:04:56 | |
| 0000907254-21-000018.txt | 2021-02-25 17:04:56 | |
 0000907254-21-000018-xbrl.zip | 701485 | 2021-02-25 17:04:56 |
| bfs-12312020xexhibit10l.htm | 86231 | 2021-02-25 17:04:56 |
| bfs-12312020xexhibit21.htm | 7439 | 2021-02-25 17:04:56 |
| bfs-12312020xexhibit231.htm | 9471 | 2021-02-25 17:04:56 |
| bfs-12312020xexhibit31.htm | 17131 | 2021-02-25 17:04:56 |
| bfs-12312020xexhibit32.htm | 10280 | 2021-02-25 17:04:56 |
| bfs-20201231.htm | 3984248 | 2021-02-25 17:04:56 |
| bfs-20201231.xsd | 89748 | 2021-02-25 17:04:56 |
| bfs-20201231_cal.xml | 121668 | 2021-02-25 17:04:56 |
| bfs-20201231_def.xml | 456779 | 2021-02-25 17:04:56 |
 bfs-20201231_g1.jpg | 88892 | 2021-02-25 17:04:56 |
 bfs-20201231_g2.jpg | 140489 | 2021-02-25 17:04:56 |
| bfs-20201231_htm.xml | 2622312 | 2021-02-25 17:04:56 |
| bfs-20201231_lab.xml | 934202 | 2021-02-25 17:04:56 |
| bfs-20201231_pre.xml | 588062 | 2021-02-25 17:04:56 |
| FilingSummary.xml | 42765 | 2021-02-25 17:04:56 |
| Financial_Report.xlsx | 129766 | 2021-02-25 17:04:56 |
| MetaLinks.json | 818579 | 2021-02-25 17:04:56 |
| R1.htm | 73107 | 2021-02-25 17:04:56 |
| R10.htm | 41424 | 2021-02-25 17:04:56 |
| R11.htm | 45285 | 2021-02-25 17:04:56 |
| R12.htm | 7578 | 2021-02-25 17:04:56 |
| R13.htm | 46613 | 2021-02-25 17:04:56 |
| R14.htm | 11657 | 2021-02-25 17:04:56 |
| R15.htm | 6288 | 2021-02-25 17:04:56 |
| R16.htm | 20711 | 2021-02-25 17:04:56 |
| R17.htm | 13699 | 2021-02-25 17:04:56 |
| R18.htm | 55967 | 2021-02-25 17:04:56 |
| R19.htm | 7496 | 2021-02-25 17:04:56 |
| R2.htm | 92892 | 2021-02-25 17:04:56 |
| R20.htm | 5496 | 2021-02-25 17:04:56 |
| R21.htm | 78658 | 2021-02-25 17:04:56 |
| R22.htm | 31672 | 2021-02-25 17:04:56 |
| R23.htm | 95075 | 2021-02-25 17:04:56 |
| R24.htm | 10111 | 2021-02-25 17:04:56 |
| R25.htm | 5035 | 2021-02-25 17:04:56 |
| R26.htm | 358403 | 2021-02-25 17:04:56 |
| R27.htm | 60897 | 2021-02-25 17:04:56 |
| R28.htm | 14041 | 2021-02-25 17:04:56 |
| R29.htm | 43500 | 2021-02-25 17:04:56 |
| R3.htm | 19186 | 2021-02-25 17:04:56 |
| R30.htm | 35362 | 2021-02-25 17:04:56 |
| R31.htm | 9796 | 2021-02-25 17:04:56 |
| R32.htm | 16709 | 2021-02-25 17:04:56 |
| R33.htm | 47681 | 2021-02-25 17:04:56 |
| R34.htm | 75431 | 2021-02-25 17:04:56 |
| R35.htm | 31734 | 2021-02-25 17:04:56 |
| R36.htm | 91106 | 2021-02-25 17:04:56 |
| R37.htm | 25555 | 2021-02-25 17:04:56 |
| R38.htm | 51732 | 2021-02-25 17:04:56 |
| R39.htm | 18216 | 2021-02-25 17:04:56 |
| R4.htm | 73144 | 2021-02-25 17:04:56 |
| R40.htm | 13496 | 2021-02-25 17:04:56 |
| R41.htm | 71288 | 2021-02-25 17:04:56 |
| R42.htm | 35816 | 2021-02-25 17:04:56 |
| R43.htm | 37107 | 2021-02-25 17:04:56 |
| R44.htm | 20367 | 2021-02-25 17:04:56 |
| R45.htm | 187383 | 2021-02-25 17:04:56 |
| R46.htm | 51621 | 2021-02-25 17:04:56 |
| R47.htm | 15768 | 2021-02-25 17:04:56 |
| R48.htm | 13461 | 2021-02-25 17:04:56 |
| R49.htm | 16599 | 2021-02-25 17:04:56 |
| R5.htm | 34941 | 2021-02-25 17:04:56 |
| R50.htm | 21258 | 2021-02-25 17:04:56 |
| R51.htm | 20811 | 2021-02-25 17:04:56 |
| R52.htm | 15772 | 2021-02-25 17:04:56 |
| R53.htm | 46956 | 2021-02-25 17:04:56 |
| R54.htm | 95474 | 2021-02-25 17:04:56 |
| R55.htm | 34880 | 2021-02-25 17:04:56 |
| R56.htm | 36878 | 2021-02-25 17:04:56 |
| R57.htm | 11891 | 2021-02-25 17:04:56 |
| R58.htm | 36896 | 2021-02-25 17:04:56 |
| R59.htm | 55514 | 2021-02-25 17:04:56 |
| R6.htm | 135823 | 2021-02-25 17:04:56 |
| R60.htm | 36750 | 2021-02-25 17:04:56 |
| R61.htm | 4377 | 2021-02-25 17:04:56 |
| R62.htm | 77950 | 2021-02-25 17:04:56 |
| R63.htm | 25360 | 2021-02-25 17:04:56 |
| R64.htm | 421326 | 2021-02-25 17:04:56 |
| R65.htm | 10607 | 2021-02-25 17:04:56 |
| R66.htm | 4823 | 2021-02-25 17:04:56 |
| R67.htm | 20227 | 2021-02-25 17:04:56 |
| R7.htm | 26691 | 2021-02-25 17:04:56 |
| R8.htm | 127125 | 2021-02-25 17:04:56 |
| R9.htm | 10317 | 2021-02-25 17:04:56 |
| report.css | 2767 | 2021-02-25 17:04:56 |
| Show.js | 1085 | 2021-02-25 17:04:56 |