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| 0001654954-22-005679-index.html | 2022-04-29 17:12:17 | |
| 0001654954-22-005679.txt | 2022-04-29 17:12:17 | |
 0001654954-22-005679-xbrl.zip | 204740 | 2022-04-29 17:12:17 |
| bkti-20211231.xsd | 59469 | 2022-04-29 17:12:17 |
| bkti-20211231_cal.xml | 53035 | 2022-04-29 17:12:17 |
| bkti-20211231_def.xml | 107490 | 2022-04-29 17:12:17 |
| bkti-20211231_lab.xml | 365690 | 2022-04-29 17:12:17 |
| bkti-20211231_pre.xml | 284381 | 2022-04-29 17:12:17 |
| bkti_10ka.htm | 1365585 | 2022-04-29 17:12:17 |
| bkti_10ka_htm.xml | 862396 | 2022-04-29 17:12:17 |
| bkti_ex231.htm | 2241 | 2022-04-29 17:12:17 |
| bkti_ex311.htm | 9095 | 2022-04-29 17:12:17 |
| bkti_ex312.htm | 9292 | 2022-04-29 17:12:17 |
| bkti_ex321.htm | 5219 | 2022-04-29 17:12:17 |
| bkti_ex322.htm | 5622 | 2022-04-29 17:12:17 |
| FilingSummary.xml | 35987 | 2022-04-29 17:12:17 |
| Financial_Report.xlsx | 87674 | 2022-04-29 17:12:17 |
| MetaLinks.json | 525020 | 2022-04-29 17:12:17 |
| R1.htm | 70752 | 2022-04-29 17:12:17 |
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| report.css | 2767 | 2022-04-29 17:12:17 |
| Show.js | 1085 | 2022-04-29 17:12:17 |