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| 0001654954-22-003300.txt | 2022-03-17 07:05:19 | |
 0001654954-22-003300-xbrl.zip | 186893 | 2022-03-17 07:05:19 |
| bkti-20211231.xsd | 61879 | 2022-03-17 07:05:19 |
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| bkti_10k.htm | 1068157 | 2022-03-17 07:05:19 |
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| bkti_ex21.htm | 4011 | 2022-03-17 07:05:19 |
| bkti_ex231.htm | 2191 | 2022-03-17 07:05:19 |
| bkti_ex3.htm | 11775 | 2022-03-17 07:05:19 |
| bkti_ex31.htm | 5810 | 2022-03-17 07:05:19 |
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| bkti_ex41.htm | 25719 | 2022-03-17 07:05:19 |
| FilingSummary.xml | 36787 | 2022-03-17 07:05:19 |
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| report.css | 2767 | 2022-03-17 07:05:19 |
| Show.js | 1085 | 2022-03-17 07:05:19 |