| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | null | Apr 25, 2025 | Apr 23, 2025 | 001-08061 |
| 4 | Open Document | Open Filing | Nov 4, 2024 | Nov 1, 2024 | 001-08061 | |
| 4 | Open Document | Open Filing | Nov 4, 2024 | Jan 4, 2023 | 001-08061 | |
| 4 | Open Document | Open Filing | Jan 18, 2023 | Jan 17, 2023 | 001-08061 | |
| 4 | Open Document | Open Filing | Dec 16, 2021 | Dec 14, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Nov 2, 2021 | Nov 1, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 7, 2021 | Apr 6, 2021 | 001-08061 |
| 4 | Open Document | Open Filing | Nov 3, 2020 | Nov 1, 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | Oct 22, 2020 | Oct 19, 2020 | 001-08061 | |
| 4 | Open Document | Open Filing | Aug 6, 2020 | Jul 31, 2020 | 001-08061 | |
| 4 | Open Document | Open Filing | Jan 17, 2020 | Jan 15, 2020 | 001-08061 | |
| 4 | Open Document | Open Filing | Oct 15, 2019 | Oct 10, 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 18, 2018 | May 18, 2018 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 6, 2017 | Jan 6, 2017 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 23, 2016 | Aug 19, 2016 | 001-08061 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2015 | Apr 30, 2015 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 30, 2015 | Apr 27, 2015 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 15, 2015 | Apr 13, 2015 | 001-08061 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 25, 2014 | Mar 17, 2014 | 001-08061 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 29, 2014 | Jan 27, 2014 | 001-08061 |