| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 25, 2023 | Apr 24, 2023 | 000-12627 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 26, 2022 | Aug 25, 2022 | 000-12627 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 22, 2022 | Apr 21, 2022 | 000-12627 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2022 | Feb 2, 2022 | 000-12627 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2021 | May 6, 2021 | 000-12627 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2021 | Jul 10, 2020 | 000-12627 |