| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 14, 2023 | Mar 10, 2023 | 000-18655 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 15, 2022 | Mar 11, 2022 | 000-18655 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 2021 | Jun 3, 2021 | 000-18655 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | May 27, 2021 | May 13, 2021 | 000-18655 |