Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000015847-17-000002-index-headers.html | 2017-03-17 15:15:45 | |
| 0000015847-17-000002-index.html | 2017-03-17 15:15:45 | |
| 0000015847-17-000002.txt | 2017-03-17 15:15:45 | |
 0000015847-17-000002-xbrl.zip | 53609 | 2017-03-17 15:15:45 |
| buks-20170131.xml | 100504 | 2017-03-17 15:15:45 |
| buks-20170131.xsd | 20677 | 2017-03-17 15:15:45 |
| buks-20170131_cal.xml | 21294 | 2017-03-17 15:15:45 |
| buks-20170131_def.xml | 84948 | 2017-03-17 15:15:45 |
| buks-20170131_lab.xml | 281824 | 2017-03-17 15:15:45 |
| buks-20170131_pre.xml | 158640 | 2017-03-17 15:15:45 |
| exhibit31-1.htm | 11094 | 2017-03-17 15:15:45 |
| exhibit31-2.htm | 11080 | 2017-03-17 15:15:45 |
| exhibit32-1.htm | 4864 | 2017-03-17 15:15:45 |
| exhibit32-2.htm | 4897 | 2017-03-17 15:15:45 |
| FilingSummary.xml | 10385 | 2017-03-17 15:15:45 |
| Financial_Report.xlsx | 23105 | 2017-03-17 15:15:45 |
| form10q.htm | 646260 | 2017-03-17 15:15:45 |
| R1.htm | 25613 | 2017-03-17 15:15:45 |
| R10.htm | 5723 | 2017-03-17 15:15:45 |
| R11.htm | 6492 | 2017-03-17 15:15:45 |
| R12.htm | 5644 | 2017-03-17 15:15:45 |
| R13.htm | 5351 | 2017-03-17 15:15:45 |
| R14.htm | 5409 | 2017-03-17 15:15:45 |
| R15.htm | 41943 | 2017-03-17 15:15:45 |
| R16.htm | 12063 | 2017-03-17 15:15:45 |
| R17.htm | 26402 | 2017-03-17 15:15:45 |
| R2.htm | 112863 | 2017-03-17 15:15:45 |
| R3.htm | 45550 | 2017-03-17 15:15:45 |
| R4.htm | 65231 | 2017-03-17 15:15:45 |
| R5.htm | 65923 | 2017-03-17 15:15:45 |
| R6.htm | 7124 | 2017-03-17 15:15:45 |
| R7.htm | 6196 | 2017-03-17 15:15:45 |
| R8.htm | 6905 | 2017-03-17 15:15:45 |
| R9.htm | 8074 | 2017-03-17 15:15:45 |
| report.css | 2767 | 2017-03-17 15:15:45 |
| Show.js | 1410 | 2017-03-17 15:15:45 |