Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-20-009457-index-headers.html | 2020-05-05 16:31:57 | |
| 0001437749-20-009457-index.html | 2020-05-05 16:31:57 | |
| 0001437749-20-009457.txt | 2020-05-05 16:31:57 | |
 0001437749-20-009457-xbrl.zip | 169913 | 2020-05-05 16:31:57 |
| bctf-20200331.xml | 2728562 | 2020-05-05 16:31:57 |
| bctf-20200331.xsd | 55029 | 2020-05-05 16:31:57 |
| bctf-20200331_cal.xml | 53986 | 2020-05-05 16:31:57 |
| bctf-20200331_def.xml | 408333 | 2020-05-05 16:31:57 |
| bctf-20200331_lab.xml | 371943 | 2020-05-05 16:31:57 |
| bctf-20200331_pre.xml | 441272 | 2020-05-05 16:31:57 |
| bctf20200331_10q.htm | 1631875 | 2020-05-05 16:31:57 |
| ex_181637.htm | 15816 | 2020-05-05 16:31:57 |
| ex_181638.htm | 15795 | 2020-05-05 16:31:57 |
| ex_181639.htm | 10014 | 2020-05-05 16:31:57 |
| FilingSummary.xml | 35248 | 2020-05-05 16:31:57 |
| Financial_Report.xlsx | 60882 | 2020-05-05 16:31:57 |
| R1.htm | 32792 | 2020-05-05 16:31:57 |
| R10.htm | 150047 | 2020-05-05 16:31:57 |
| R11.htm | 420501 | 2020-05-05 16:31:57 |
| R12.htm | 30025 | 2020-05-05 16:31:57 |
| R13.htm | 70253 | 2020-05-05 16:31:57 |
| R14.htm | 62986 | 2020-05-05 16:31:57 |
| R15.htm | 184560 | 2020-05-05 16:31:57 |
| R16.htm | 44811 | 2020-05-05 16:31:57 |
| R17.htm | 30198 | 2020-05-05 16:31:57 |
| R18.htm | 53548 | 2020-05-05 16:31:57 |
| R19.htm | 144317 | 2020-05-05 16:31:57 |
| R2.htm | 93537 | 2020-05-05 16:31:57 |
| R20.htm | 410651 | 2020-05-05 16:31:57 |
| R21.htm | 24235 | 2020-05-05 16:31:57 |
| R22.htm | 63581 | 2020-05-05 16:31:57 |
| R23.htm | 61228 | 2020-05-05 16:31:57 |
| R24.htm | 179446 | 2020-05-05 16:31:57 |
| R25.htm | 42739 | 2020-05-05 16:31:57 |
| R26.htm | 7222 | 2020-05-05 16:31:57 |
| R27.htm | 14889 | 2020-05-05 16:31:57 |
| R28.htm | 43434 | 2020-05-05 16:31:57 |
| R29.htm | 9097 | 2020-05-05 16:31:57 |
| R3.htm | 17599 | 2020-05-05 16:31:57 |
| R30.htm | 18567 | 2020-05-05 16:31:57 |
| R31.htm | 19327 | 2020-05-05 16:31:57 |
| R32.htm | 27713 | 2020-05-05 16:31:57 |
| R33.htm | 28883 | 2020-05-05 16:31:57 |
| R34.htm | 25618 | 2020-05-05 16:31:57 |
| R35.htm | 26417 | 2020-05-05 16:31:57 |
| R36.htm | 50097 | 2020-05-05 16:31:57 |
| R37.htm | 32742 | 2020-05-05 16:31:57 |
| R38.htm | 18465 | 2020-05-05 16:31:57 |
| R39.htm | 33371 | 2020-05-05 16:31:57 |
| R4.htm | 139540 | 2020-05-05 16:31:57 |
| R40.htm | 41079 | 2020-05-05 16:31:57 |
| R41.htm | 14991 | 2020-05-05 16:31:57 |
| R42.htm | 6563 | 2020-05-05 16:31:57 |
| R43.htm | 13177 | 2020-05-05 16:31:57 |
| R44.htm | 52941 | 2020-05-05 16:31:57 |
| R45.htm | 14094 | 2020-05-05 16:31:57 |
| R46.htm | 33155 | 2020-05-05 16:31:57 |
| R47.htm | 14137 | 2020-05-05 16:31:57 |
| R48.htm | 31917 | 2020-05-05 16:31:57 |
| R49.htm | 22337 | 2020-05-05 16:31:57 |
| R5.htm | 33456 | 2020-05-05 16:31:57 |
| R50.htm | 35057 | 2020-05-05 16:31:57 |
| R51.htm | 66942 | 2020-05-05 16:31:57 |
| R6.htm | 2947 | 2020-05-05 16:31:57 |
| R7.htm | 102413 | 2020-05-05 16:31:57 |
| R8.htm | 24319 | 2020-05-05 16:31:57 |
| R9.htm | 58118 | 2020-05-05 16:31:57 |
| report.css | 2767 | 2020-05-05 16:31:57 |
| Show.js | 1085 | 2020-05-05 16:31:57 |