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|---|---|---|
 0001654954-19-012425-index-headers.html | 2019-11-06 16:31:36 | |
| 0001654954-19-012425-index.html | 2019-11-06 16:31:36 | |
| 0001654954-19-012425.txt | 2019-11-06 16:31:36 | |
 0001654954-19-012425-xbrl.zip | 63834 | 2019-11-06 16:31:36 |
| bkti-20190930.xml | 486645 | 2019-11-06 16:31:36 |
| bkti-20190930.xsd | 21709 | 2019-11-06 16:31:36 |
| bkti-20190930_cal.xml | 46050 | 2019-11-06 16:31:36 |
| bkti-20190930_def.xml | 28629 | 2019-11-06 16:31:36 |
| bkti-20190930_lab.xml | 208686 | 2019-11-06 16:31:36 |
| bkti-20190930_pre.xml | 147771 | 2019-11-06 16:31:36 |
| bkti_10q.htm | 812191 | 2019-11-06 16:31:36 |
| bkti_ex311.htm | 10311 | 2019-11-06 16:31:36 |
| bkti_ex312.htm | 10390 | 2019-11-06 16:31:36 |
| bkti_ex321.htm | 5595 | 2019-11-06 16:31:36 |
| bkti_ex322.htm | 5692 | 2019-11-06 16:31:36 |
| FilingSummary.xml | 20771 | 2019-11-06 16:31:36 |
| Financial_Report.xlsx | 46898 | 2019-11-06 16:31:36 |
| R1.htm | 27720 | 2019-11-06 16:31:36 |
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| R8.htm | 4376 | 2019-11-06 16:31:36 |
| R9.htm | 8234 | 2019-11-06 16:31:36 |
| report.css | 2767 | 2019-11-06 16:31:36 |
| Show.js | 1085 | 2019-11-06 16:31:36 |