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|---|---|---|
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| 0000950170-22-001044-index.html | 2022-02-10 08:47:09 | |
| 0000950170-22-001044.txt | 2022-02-10 08:47:09 | |
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| bchg-20211231.htm | 1272984 | 2022-02-10 08:47:09 |
| bchg-20211231.xsd | 24742 | 2022-02-10 08:47:09 |
| bchg-20211231_cal.xml | 13134 | 2022-02-10 08:47:09 |
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| bchg-20211231_htm.xml | 590317 | 2022-02-10 08:47:09 |
| bchg-20211231_lab.xml | 138576 | 2022-02-10 08:47:09 |
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| bchg-ex31_1.htm | 27979 | 2022-02-10 08:47:09 |
| bchg-ex31_2.htm | 27663 | 2022-02-10 08:47:09 |
| bchg-ex32_1.htm | 8887 | 2022-02-10 08:47:09 |
| bchg-ex32_2.htm | 9315 | 2022-02-10 08:47:09 |
| FilingSummary.xml | 18663 | 2022-02-10 08:47:09 |
| Financial_Report.xlsx | 43644 | 2022-02-10 08:47:09 |
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| R11.htm | 12734 | 2022-02-10 08:47:09 |
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| R9.htm | 55197 | 2022-02-10 08:47:09 |
| report.css | 2767 | 2022-02-10 08:47:09 |
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