| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2023 | May 3, 2023 | 001-06571 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2023 | May 2, 2023 | 001-06571 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2023 | May 1, 2023 | 001-06571 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2022 | May 3, 2022 | 001-06571 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2022 | May 3, 2022 | 001-06571 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2022 | May 1, 2022 | 001-06571 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2021 | May 4, 2021 | 001-06571 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2021 | May 1, 2021 | 001-06571 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 7, 2021 | Apr 1, 2021 | 001-06571 |