Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001748824-20-000056-index-headers.html | 2020-11-06 06:33:03 | |
| 0001748824-20-000056-index.html | 2020-11-06 06:33:03 | |
| 0001748824-20-000056.txt | 2020-11-06 06:33:03 | |
 0001748824-20-000056-xbrl.zip | 602234 | 2020-11-06 06:33:03 |
| bsig-20200930.htm | 3958561 | 2020-11-06 06:33:03 |
| bsig-20200930.xsd | 60967 | 2020-11-06 06:33:03 |
| bsig-20200930_cal.xml | 125137 | 2020-11-06 06:33:03 |
| bsig-20200930_def.xml | 437505 | 2020-11-06 06:33:03 |
 bsig-20200930_g1.jpg | 209763 | 2020-11-06 06:33:03 |
| bsig-20200930_htm.xml | 2616179 | 2020-11-06 06:33:03 |
| bsig-20200930_lab.xml | 709100 | 2020-11-06 06:33:03 |
| bsig-20200930_pre.xml | 507447 | 2020-11-06 06:33:03 |
| bsig-2020930xexx311.htm | 11661 | 2020-11-06 06:33:03 |
| bsig-2020930xexx312.htm | 11725 | 2020-11-06 06:33:03 |
| bsig-2020930xexx321.htm | 5049 | 2020-11-06 06:33:03 |
| bsig-2020930xexx322.htm | 5221 | 2020-11-06 06:33:03 |
| FilingSummary.xml | 39379 | 2020-11-06 06:33:03 |
| Financial_Report.xlsx | 109307 | 2020-11-06 06:33:03 |
| MetaLinks.json | 720921 | 2020-11-06 06:33:03 |
| R1.htm | 59309 | 2020-11-06 06:33:03 |
| R10.htm | 13419 | 2020-11-06 06:33:03 |
| R11.htm | 25339 | 2020-11-06 06:33:03 |
| R12.htm | 44985 | 2020-11-06 06:33:03 |
| R13.htm | 124251 | 2020-11-06 06:33:03 |
| R14.htm | 30118 | 2020-11-06 06:33:03 |
| R15.htm | 38650 | 2020-11-06 06:33:03 |
| R16.htm | 28788 | 2020-11-06 06:33:03 |
| R17.htm | 88889 | 2020-11-06 06:33:03 |
| R18.htm | 11284 | 2020-11-06 06:33:03 |
| R19.htm | 36040 | 2020-11-06 06:33:03 |
| R2.htm | 111413 | 2020-11-06 06:33:03 |
| R20.htm | 32894 | 2020-11-06 06:33:03 |
| R21.htm | 57278 | 2020-11-06 06:33:03 |
| R22.htm | 7718 | 2020-11-06 06:33:03 |
| R23.htm | 231295 | 2020-11-06 06:33:03 |
| R24.htm | 5773 | 2020-11-06 06:33:03 |
| R25.htm | 17691 | 2020-11-06 06:33:03 |
| R26.htm | 23914 | 2020-11-06 06:33:03 |
| R27.htm | 46638 | 2020-11-06 06:33:03 |
| R28.htm | 125758 | 2020-11-06 06:33:03 |
| R29.htm | 29913 | 2020-11-06 06:33:03 |
| R3.htm | 10509 | 2020-11-06 06:33:03 |
| R30.htm | 39560 | 2020-11-06 06:33:03 |
| R31.htm | 29345 | 2020-11-06 06:33:03 |
| R32.htm | 88153 | 2020-11-06 06:33:03 |
| R33.htm | 34764 | 2020-11-06 06:33:03 |
| R34.htm | 24145 | 2020-11-06 06:33:03 |
| R35.htm | 56144 | 2020-11-06 06:33:03 |
| R36.htm | 221725 | 2020-11-06 06:33:03 |
| R37.htm | 21711 | 2020-11-06 06:33:03 |
| R38.htm | 8670 | 2020-11-06 06:33:03 |
| R39.htm | 41306 | 2020-11-06 06:33:03 |
| R4.htm | 129717 | 2020-11-06 06:33:03 |
| R40.htm | 45552 | 2020-11-06 06:33:03 |
| R41.htm | 21546 | 2020-11-06 06:33:03 |
| R42.htm | 19388 | 2020-11-06 06:33:03 |
| R43.htm | 111469 | 2020-11-06 06:33:03 |
| R44.htm | 16952 | 2020-11-06 06:33:03 |
| R45.htm | 28744 | 2020-11-06 06:33:03 |
| R46.htm | 18284 | 2020-11-06 06:33:03 |
| R47.htm | 39429 | 2020-11-06 06:33:03 |
| R48.htm | 24009 | 2020-11-06 06:33:03 |
| R49.htm | 18075 | 2020-11-06 06:33:03 |
| R5.htm | 29462 | 2020-11-06 06:33:03 |
| R50.htm | 20440 | 2020-11-06 06:33:03 |
| R51.htm | 27718 | 2020-11-06 06:33:03 |
| R52.htm | 50335 | 2020-11-06 06:33:03 |
| R53.htm | 26778 | 2020-11-06 06:33:03 |
| R54.htm | 16805 | 2020-11-06 06:33:03 |
| R55.htm | 8330 | 2020-11-06 06:33:03 |
| R56.htm | 44903 | 2020-11-06 06:33:03 |
| R57.htm | 4850 | 2020-11-06 06:33:03 |
| R58.htm | 4442 | 2020-11-06 06:33:03 |
| R59.htm | 21561 | 2020-11-06 06:33:03 |
| R6.htm | 172071 | 2020-11-06 06:33:03 |
| R60.htm | 37710 | 2020-11-06 06:33:03 |
| R61.htm | 7535 | 2020-11-06 06:33:03 |
| R62.htm | 38130 | 2020-11-06 06:33:03 |
| R63.htm | 80324 | 2020-11-06 06:33:03 |
| R64.htm | 15082 | 2020-11-06 06:33:03 |
| R65.htm | 7690 | 2020-11-06 06:33:03 |
| R7.htm | 4812 | 2020-11-06 06:33:03 |
| R8.htm | 161236 | 2020-11-06 06:33:03 |
| R9.htm | 13173 | 2020-11-06 06:33:03 |
| report.css | 2767 | 2020-11-06 06:33:03 |
| Show.js | 1085 | 2020-11-06 06:33:03 |