Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-17-015934-index-headers.html | 2017-09-14 14:11:31 | |
| 0001437749-17-015934-index.html | 2017-09-14 14:11:31 | |
| 0001437749-17-015934.txt | 2017-09-14 14:11:31 | |
 0001437749-17-015934-xbrl.zip | 44702 | 2017-09-14 14:11:31 |
| buks-20170731.xml | 131220 | 2017-09-14 14:11:31 |
| buks-20170731.xsd | 22815 | 2017-09-14 14:11:31 |
| buks-20170731_cal.xml | 33656 | 2017-09-14 14:11:31 |
| buks-20170731_def.xml | 149785 | 2017-09-14 14:11:31 |
| buks-20170731_lab.xml | 150074 | 2017-09-14 14:11:31 |
| buks-20170731_pre.xml | 163438 | 2017-09-14 14:11:31 |
| buks20170731_10q.htm | 493882 | 2017-09-14 14:11:31 |
| ex31-1.htm | 14840 | 2017-09-14 14:11:31 |
| ex31-2.htm | 14808 | 2017-09-14 14:11:31 |
| ex32-1.htm | 5575 | 2017-09-14 14:11:31 |
| ex32-2.htm | 5307 | 2017-09-14 14:11:31 |
| FilingSummary.xml | 14438 | 2017-09-14 14:11:31 |
| Financial_Report.xlsx | 25660 | 2017-09-14 14:11:31 |
| R1.htm | 27448 | 2017-09-14 14:11:31 |
| R10.htm | 11243 | 2017-09-14 14:11:31 |
| R11.htm | 6226 | 2017-09-14 14:11:31 |
| R12.htm | 6346 | 2017-09-14 14:11:31 |
| R13.htm | 23089 | 2017-09-14 14:11:31 |
| R14.htm | 5406 | 2017-09-14 14:11:31 |
| R15.htm | 21340 | 2017-09-14 14:11:31 |
| R16.htm | 3304 | 2017-09-14 14:11:31 |
| R17.htm | 5565 | 2017-09-14 14:11:31 |
| R18.htm | 3974 | 2017-09-14 14:11:31 |
| R19.htm | 19366 | 2017-09-14 14:11:31 |
| R2.htm | 115318 | 2017-09-14 14:11:31 |
| R20.htm | 10941 | 2017-09-14 14:11:31 |
| R21.htm | 9237 | 2017-09-14 14:11:31 |
| R22.htm | 6084 | 2017-09-14 14:11:31 |
| R23.htm | 10227 | 2017-09-14 14:11:31 |
| R3.htm | 35549 | 2017-09-14 14:11:31 |
| R4.htm | 61232 | 2017-09-14 14:11:31 |
| R5.htm | 57864 | 2017-09-14 14:11:31 |
| R6.htm | 7585 | 2017-09-14 14:11:31 |
| R7.htm | 5540 | 2017-09-14 14:11:31 |
| R8.htm | 6317 | 2017-09-14 14:11:31 |
| R9.htm | 6119 | 2017-09-14 14:11:31 |
| report.css | 2767 | 2017-09-14 14:11:31 |
| Show.js | 1410 | 2017-09-14 14:11:31 |