| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 7, 2025 | May 5, 2025 | 000-18516 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2024 | May 9, 2024 | 000-18516 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 8, 2024 | May 6, 2024 | 000-18516 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2023 | May 9, 2023 | 000-18516 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2023 | May 3, 2023 | 000-18516 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2022 | May 3, 2022 | 000-18516 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2018 | Sep 23, 2018 | 000-18516 |