Parent Directory| Name | Size | Last Modified |
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| 0001437749-23-028966-index.html | 2023-10-25 17:09:03 | |
| 0001437749-23-028966.txt | 2023-10-25 17:09:03 | |
 0001437749-23-028966-xbrl.zip | 52570 | 2023-10-25 17:09:03 |
| belfb-20231025.xsd | 3850 | 2023-10-25 17:09:03 |
| belfb-20231025_def.xml | 13757 | 2023-10-25 17:09:03 |
| belfb-20231025_lab.xml | 18065 | 2023-10-25 17:09:03 |
| belfb-20231025_pre.xml | 13789 | 2023-10-25 17:09:03 |
| belfb20230809_8k.htm | 41375 | 2023-10-25 17:09:03 |
| belfb20230809_8k_htm.xml | 4334 | 2023-10-25 17:09:03 |
| ex_557712.htm | 426240 | 2023-10-25 17:09:03 |
| ex_582931.htm | 96819 | 2023-10-25 17:09:03 |
| FilingSummary.xml | 1780 | 2023-10-25 17:09:03 |
| Financial_Report.xlsx | 5850 | 2023-10-25 17:09:03 |
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| MetaLinks.json | 22130 | 2023-10-25 17:09:03 |
| R1.htm | 43840 | 2023-10-25 17:09:03 |
| report.css | 2767 | 2023-10-25 17:09:03 |
| Show.js | 1085 | 2023-10-25 17:09:03 |