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|---|---|---|
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| 0000729580-18-000022-index.html | 2018-08-07 12:48:54 | |
| 0000729580-18-000022.txt | 2018-08-07 12:48:54 | |
 0000729580-18-000022-xbrl.zip | 144575 | 2018-08-07 12:48:54 |
| bel10-q.htm | 978729 | 2018-08-07 12:48:54 |
| belfb-20180630.xml | 1226611 | 2018-08-07 12:48:54 |
| belfb-20180630.xsd | 40363 | 2018-08-07 12:48:54 |
| belfb-20180630_cal.xml | 53858 | 2018-08-07 12:48:54 |
| belfb-20180630_def.xml | 238848 | 2018-08-07 12:48:54 |
| belfb-20180630_lab.xml | 516820 | 2018-08-07 12:48:54 |
| belfb-20180630_pre.xml | 335477 | 2018-08-07 12:48:54 |
| ex31-1.htm | 11261 | 2018-08-07 12:48:54 |
| ex31-2.htm | 11548 | 2018-08-07 12:48:54 |
| ex32-1.htm | 3483 | 2018-08-07 12:48:54 |
| ex32-2.htm | 3939 | 2018-08-07 12:48:54 |
| FilingSummary.xml | 29298 | 2018-08-07 12:48:54 |
| Financial_Report.xlsx | 63113 | 2018-08-07 12:48:54 |
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| report.css | 2767 | 2018-08-07 12:48:54 |
| Show.js | 1410 | 2018-08-07 12:48:54 |