| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Oct 18, 2023 | Oct 16, 2023 | 000-12919 | |
| 4/A | Open Document | Open Filing | Sep 27, 2023 | Sep 25, 2023 | 000-12919 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 14, 2022 | Jun 11, 2022 | 000-12919 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 12, 2021 | Jan 8, 2021 | 000-12919 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2019 | Nov 9, 2019 | 000-12919 |