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| 0001654954-19-002033-index.html | 2019-02-27 16:36:34 | |
| 0001654954-19-002033.txt | 2019-02-27 16:36:34 | |
 0001654954-19-002033-xbrl.zip | 89273 | 2019-02-27 16:36:34 |
| bkti-20181231.xml | 478375 | 2019-02-27 16:36:34 |
| bkti-20181231.xsd | 43430 | 2019-02-27 16:36:34 |
| bkti-20181231_cal.xml | 49853 | 2019-02-27 16:36:34 |
| bkti-20181231_def.xml | 50824 | 2019-02-27 16:36:34 |
| bkti-20181231_lab.xml | 293319 | 2019-02-27 16:36:34 |
| bkti-20181231_pre.xml | 206566 | 2019-02-27 16:36:34 |
| bkti_1020.htm | 14513 | 2019-02-27 16:36:34 |
| bkti_10k.htm | 1478714 | 2019-02-27 16:36:34 |
| bkti_21.htm | 6196 | 2019-02-27 16:36:34 |
| bkti_231.htm | 5595 | 2019-02-27 16:36:34 |
| bkti_311.htm | 14068 | 2019-02-27 16:36:34 |
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| bkti_321.htm | 8863 | 2019-02-27 16:36:34 |
| bkti_322.htm | 9250 | 2019-02-27 16:36:34 |
| FilingSummary.xml | 30221 | 2019-02-27 16:36:34 |
| Financial_Report.xlsx | 68223 | 2019-02-27 16:36:34 |
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| report.css | 2767 | 2019-02-27 16:36:34 |
| Show.js | 1085 | 2019-02-27 16:36:34 |