| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 29, 2025 | Apr 25, 2025 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2024 | Nov 13, 2024 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2024 | Apr 26, 2024 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2023 | May 12, 2023 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 2, 2023 | Apr 28, 2023 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2022 | Apr 29, 2022 | 001-06887 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 7, 2022 | Apr 30, 2021 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2021 | Apr 30, 2021 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2021 | Feb 25, 2021 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2020 | Apr 24, 2020 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2020 | Feb 21, 2020 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2020 | Feb 5, 2020 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 3, 2020 | Feb 1, 2020 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 8, 2019 | Nov 7, 2019 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2019 | Mar 1, 2019 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 26, 2019 | Feb 22, 2019 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2018 | Mar 1, 2018 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2018 | Feb 23, 2018 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2018 | Jan 31, 2018 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 16, 2017 | Aug 11, 2017 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2017 | Feb 24, 2017 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2017 | Jan 31, 2017 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 27, 2017 | Jan 25, 2017 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2016 | May 2, 2016 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2016 | Feb 26, 2016 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2016 | Feb 25, 2016 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2016 | Feb 3, 2016 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2016 | Jan 29, 2016 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2015 | Mar 2, 2015 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2015 | Jan 30, 2015 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 27, 2015 | Jan 23, 2015 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 2, 2015 | Dec 31, 2014 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2014 | Mar 3, 2014 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 3, 2014 | Jan 31, 2014 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 28, 2014 | Jan 24, 2014 | 001-06887 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2014 | Dec 31, 2013 | 001-06887 |