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|---|---|---|
 0001437749-19-018371-index-headers.html | 2019-09-13 14:42:12 | |
| 0001437749-19-018371-index.html | 2019-09-13 14:42:12 | |
| 0001437749-19-018371.txt | 2019-09-13 14:42:12 | |
 0001437749-19-018371-xbrl.zip | 66820 | 2019-09-13 14:42:12 |
| buks-20190731.xml | 333720 | 2019-09-13 14:42:12 |
| buks-20190731.xsd | 31863 | 2019-09-13 14:42:12 |
| buks-20190731_cal.xml | 40825 | 2019-09-13 14:42:12 |
| buks-20190731_def.xml | 205588 | 2019-09-13 14:42:12 |
| buks-20190731_lab.xml | 203088 | 2019-09-13 14:42:12 |
| buks-20190731_pre.xml | 227144 | 2019-09-13 14:42:12 |
| buks20190731_10q.htm | 757166 | 2019-09-13 14:42:12 |
| ex_157399.htm | 13821 | 2019-09-13 14:42:12 |
| ex_157400.htm | 13822 | 2019-09-13 14:42:12 |
| ex_157401.htm | 6368 | 2019-09-13 14:42:12 |
| ex_157402.htm | 6370 | 2019-09-13 14:42:12 |
| FilingSummary.xml | 21076 | 2019-09-13 14:42:12 |
| Financial_Report.xlsx | 35341 | 2019-09-13 14:42:12 |
| R1.htm | 30843 | 2019-09-13 14:42:12 |
| R10.htm | 5206 | 2019-09-13 14:42:12 |
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| R9.htm | 21696 | 2019-09-13 14:42:12 |
| report.css | 2767 | 2019-09-13 14:42:12 |
| Show.js | 1085 | 2019-09-13 14:42:12 |