| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 4, 2024 | Apr 3, 2024 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 1, 2024 | Mar 28, 2024 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 27, 2024 | Mar 26, 2024 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2024 | Mar 1, 2024 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2023 | Apr 3, 2023 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2023 | Mar 31, 2023 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 28, 2023 | Mar 27, 2023 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 27, 2023 | Mar 24, 2023 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2023 | Mar 7, 2023 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 1, 2022 | Mar 31, 2022 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 31, 2022 | Mar 29, 2022 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 29, 2022 | Mar 25, 2022 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2022 | Feb 28, 2022 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 11, 2021 | Jun 10, 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2021 | Apr 1, 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 31, 2021 | Mar 29, 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 29, 2021 | Mar 26, 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Feb 26, 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 6, 2020 | Apr 2, 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 31, 2020 | Mar 27, 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 20, 2020 | Feb 18, 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 4, 2019 | Apr 2, 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2019 | Mar 29, 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2019 | Feb 25, 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 19, 2018 | Nov 16, 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 9, 2018 | Oct 9, 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2018 | Apr 3, 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2018 | Apr 2, 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 10, 2017 | Oct 6, 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2017 | Apr 1, 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 16, 2016 | Dec 14, 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 11, 2016 | Oct 6, 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2016 | Apr 1, 2016 | 000-26584 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 9, 2015 | Oct 1, 2015 | 000-26584 |