| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 4, 2025 | Aug 1, 2025 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2025 | Jun 2, 2025 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 31, 2024 | May 30, 2024 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2023 | Aug 1, 2023 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 31, 2023 | May 30, 2023 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2022 | May 23, 2022 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 1, 2021 | Oct 29, 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2021 | May 3, 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2020 | May 4, 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2019 | Apr 30, 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2018 | Apr 27, 2018 | 000-26584 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 25, 2018 | Apr 24, 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2015 | Jun 30, 2015 | 001-34165 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 25, 2014 | Sep 23, 2014 | 001-34165 |