| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | null | May 5, 2025 | May 1, 2025 | 000-14939 |
| 4 | Open Document | Open Filing | May 13, 2024 | May 9, 2024 | 000-14939 | |
| 4 | Open Document | Open Filing | May 3, 2023 | May 1, 2023 | 000-14939 | |
| 4 | Open Document | Open Filing | May 4, 2022 | May 2, 2022 | 000-14939 | |
| 3 | Open Document | Open Filing | Sep 3, 2021 | Aug 25, 2021 | 000-14939 |