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|---|---|---|
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| 0000950170-23-001914-index.html | 2023-02-07 06:18:09 | |
| 0000950170-23-001914.txt | 2023-02-07 06:18:09 | |
 0000950170-23-001914-xbrl.zip | 215787 | 2023-02-07 06:18:09 |
| bv-20221231.htm | 2385853 | 2023-02-07 06:18:09 |
| bv-20221231.xsd | 47128 | 2023-02-07 06:18:09 |
| bv-20221231_cal.xml | 50551 | 2023-02-07 06:18:09 |
| bv-20221231_def.xml | 196369 | 2023-02-07 06:18:09 |
| bv-20221231_htm.xml | 1917214 | 2023-02-07 06:18:09 |
| bv-20221231_lab.xml | 429468 | 2023-02-07 06:18:09 |
| bv-20221231_pre.xml | 348452 | 2023-02-07 06:18:09 |
| bv-ex10_1.htm | 119278 | 2023-02-07 06:18:09 |
| bv-ex31_1.htm | 17917 | 2023-02-07 06:18:09 |
| bv-ex31_2.htm | 16571 | 2023-02-07 06:18:09 |
| bv-ex32_1.htm | 7685 | 2023-02-07 06:18:09 |
| bv-ex32_2.htm | 7518 | 2023-02-07 06:18:09 |
| FilingSummary.xml | 40253 | 2023-02-07 06:18:09 |
| Financial_Report.xlsx | 87586 | 2023-02-07 06:18:09 |
| MetaLinks.json | 731648 | 2023-02-07 06:18:09 |
| R1.htm | 53067 | 2023-02-07 06:18:09 |
| R10.htm | 20507 | 2023-02-07 06:18:09 |
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| R9.htm | 12426 | 2023-02-07 06:18:09 |
| report.css | 2767 | 2023-02-07 06:18:09 |
| Show.js | 1085 | 2023-02-07 06:18:09 |