| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 16, 2024 | Feb 15, 2024 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 17, 2023 | Feb 15, 2023 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 17, 2022 | Feb 16, 2022 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2021 | Feb 16, 2021 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2020 | Feb 13, 2020 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 15, 2019 | Feb 14, 2019 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 22, 2018 | Feb 20, 2018 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2017 | Feb 23, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 7, 2016 | Jan 5, 2016 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2016 | Dec 31, 2015 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2015 | Feb 17, 2015 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 3, 2015 | Feb 2, 2015 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2015 | Dec 31, 2014 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 7, 2014 | May 5, 2014 | 000-51826 |