| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 5, 2025 | May 1, 2025 | 000-14939 | |
| 4 | Open Document | Open Filing | Mar 12, 2025 | Mar 10, 2025 | 000-14939 | |
| 4 | Open Document | Open Filing | Oct 3, 2024 | Oct 1, 2024 | 000-14939 | |
| 4 | Open Document | Open Filing | Sep 20, 2024 | Sep 19, 2024 | 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 | |
| 4 | Open Document | Open Filing | Apr 5, 2022 | Apr 1, 2022 | 000-14939 | |
| 4 | Open Document | Open Filing | Aug 30, 2021 | Aug 26, 2021 | 000-14939 | |
| 4 | Open Document | Open Filing | May 4, 2021 | May 3, 2021 | 000-14939 | |
| 4 | Open Document | Open Filing | Jan 5, 2021 | Jan 4, 2021 | 000-14939 | |
| 4 | Open Document | Open Filing | May 5, 2020 | May 1, 2020 | 000-14939 | |
| 4 | Open Document | Open Filing | Jul 3, 2019 | Jul 1, 2019 | 000-14939 | |
| 4 | Open Document | Open Filing | May 2, 2019 | May 1, 2019 | 000-14939 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 3, 2018 | May 1, 2018 | 000-14939 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 16, 2018 | Jan 9, 2018 | 000-14939 |