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| 0000913142-22-000007-index.html | 2022-02-15 14:44:21 | |
| 0000913142-22-000007.txt | 2022-02-15 14:44:21 | |
 0000913142-22-000007-xbrl.zip | 799512 | 2022-02-15 14:44:21 |
| bdc-20211231.htm | 3800843 | 2022-02-15 14:44:21 |
| bdc-20211231.xsd | 113213 | 2022-02-15 14:44:21 |
| bdc-20211231_cal.xml | 173898 | 2022-02-15 14:44:21 |
| bdc-20211231_def.xml | 708294 | 2022-02-15 14:44:21 |
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| bdc-20211231_htm.xml | 4040111 | 2022-02-15 14:44:21 |
| bdc-20211231_lab.xml | 1415751 | 2022-02-15 14:44:21 |
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| exhibit101_trademarklice.htm | 5230 | 2022-02-15 14:44:21 |
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 exhibit101_trademarklice016.jpg | 86609 | 2022-02-15 14:44:21 |
| exhibit104_ssaragreement-2.htm | 82116 | 2022-02-15 14:44:21 |
| exhibit105_psuagreement-20.htm | 82158 | 2022-02-15 14:44:21 |
| exhibit106_rsuagreement-20.htm | 80594 | 2022-02-15 14:44:21 |
| exhibit211_2021.htm | 88391 | 2022-02-15 14:44:21 |
| exhibit231_2021.htm | 4794 | 2022-02-15 14:44:21 |
| exhibit241_2021.htm | 43061 | 2022-02-15 14:44:21 |
| exhibit311_2021.htm | 10095 | 2022-02-15 14:44:21 |
| exhibit312_2021.htm | 10158 | 2022-02-15 14:44:21 |
| exhibit321_2021.htm | 4716 | 2022-02-15 14:44:21 |
| exhibit322_2021.htm | 4849 | 2022-02-15 14:44:21 |
| FilingSummary.xml | 82627 | 2022-02-15 14:44:21 |
| Financial_Report.xlsx | 209673 | 2022-02-15 14:44:21 |
| MetaLinks.json | 1403822 | 2022-02-15 14:44:21 |
| R1.htm | 64837 | 2022-02-15 14:44:21 |
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| report.css | 2768 | 2022-02-15 14:44:21 |
| Show.js | 1086 | 2022-02-15 14:44:21 |