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| 0001437749-24-031903-index.html | 2024-10-23 16:19:52 | |
| 0001437749-24-031903.txt | 2024-10-23 16:19:52 | |
 0001437749-24-031903-xbrl.zip | 36579 | 2024-10-23 16:19:52 |
| belfb-20241023.xsd | 3850 | 2024-10-23 16:19:52 |
| belfb-20241023_def.xml | 13377 | 2024-10-23 16:19:52 |
| belfb-20241023_lab.xml | 17527 | 2024-10-23 16:19:52 |
| belfb-20241023_pre.xml | 13354 | 2024-10-23 16:19:52 |
| belfb20240826_8k.htm | 35066 | 2024-10-23 16:19:52 |
| belfb20240826_8k_htm.xml | 4743 | 2024-10-23 16:19:52 |
| ex_718466.htm | 486477 | 2024-10-23 16:19:52 |
| FilingSummary.xml | 1780 | 2024-10-23 16:19:52 |
| Financial_Report.xlsx | 5814 | 2024-10-23 16:19:52 |
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| report.css | 2767 | 2024-10-23 16:19:52 |
| Show.js | 1085 | 2024-10-23 16:19:52 |