| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2023 | 15 Feb 2023 | 000-51826 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Mar 2022 | 16 Feb 2022 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2022 | 16 Feb 2022 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Feb 2021 | 16 Feb 2021 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2020 | 13 Feb 2020 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2019 | 14 Feb 2019 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2018 | 20 Feb 2018 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2017 | 23 Feb 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2016 | 05 Jan 2016 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2016 | 31 Dec 2015 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2015 | 02 Feb 2015 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2015 | 31 Dec 2014 | 000-51826 |