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|---|---|---|
 0001654954-20-002248-index-headers.html | 2020-03-04 16:37:04 | |
| 0001654954-20-002248-index.html | 2020-03-04 16:37:04 | |
| 0001654954-20-002248.txt | 2020-03-04 16:37:04 | |
 0001654954-20-002248-xbrl.zip | 89023 | 2020-03-04 16:37:04 |
| bkti-20191231.xml | 483797 | 2020-03-04 16:37:04 |
| bkti-20191231.xsd | 37430 | 2020-03-04 16:37:04 |
| bkti-20191231_cal.xml | 50808 | 2020-03-04 16:37:04 |
| bkti-20191231_def.xml | 50156 | 2020-03-04 16:37:04 |
| bkti-20191231_lab.xml | 289091 | 2020-03-04 16:37:04 |
| bkti-20191231_pre.xml | 212140 | 2020-03-04 16:37:04 |
| bkti_10k.htm | 1129472 | 2020-03-04 16:37:04 |
| bkti_ex1019.htm | 38242 | 2020-03-04 16:37:04 |
| bkti_ex21.htm | 4940 | 2020-03-04 16:37:04 |
| bkti_ex231.htm | 4678 | 2020-03-04 16:37:04 |
| bkti_ex311.htm | 13502 | 2020-03-04 16:37:04 |
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| bkti_ex321.htm | 9220 | 2020-03-04 16:37:04 |
| bkti_ex322.htm | 9840 | 2020-03-04 16:37:04 |
| bkti_ex41.htm | 32949 | 2020-03-04 16:37:04 |
| FilingSummary.xml | 30769 | 2020-03-04 16:37:04 |
| Financial_Report.xlsx | 69395 | 2020-03-04 16:37:04 |
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| report.css | 2767 | 2020-03-04 16:37:04 |
| Show.js | 1085 | 2020-03-04 16:37:04 |