| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2024 | Feb 23, 2024 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 23, 2024 | Feb 21, 2024 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2023 | Feb 21, 2023 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2023 | Feb 22, 2023 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2022 | Feb 22, 2022 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2022 | Feb 23, 2022 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Feb 23, 2021 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 23, 2021 | Feb 21, 2021 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2020 | Feb 26, 2020 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 9, 2019 | Aug 9, 2019 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2019 | Feb 26, 2019 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2019 | Feb 25, 2019 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2018 | Feb 27, 2018 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2018 | Feb 26, 2018 | 001-08246 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2018 | Dec 31, 2017 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 17, 2018 | Jan 12, 2018 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 22, 2017 | Jan 1, 2017 | 001-08246 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2017 | Dec 31, 2016 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 28, 2016 | Jan 26, 2016 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 8, 2015 | Dec 4, 2015 | 001-08246 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 23, 2015 | Jan 21, 2015 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 8, 2014 | Dec 4, 2014 | 001-08246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2014 | May 6, 2014 | 001-08246 |