| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 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 |
| SC 13G | Open Document | Open Filing | Nov 15, 2021 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2021 | Feb 16, 2021 | 000-51826 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2020 | Feb 13, 2020 | 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 21, 2018 | Feb 20, 2018 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 18, 2018 | Jan 16, 2018 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 10, 2018 | Jan 8, 2018 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2018 | Jan 2, 2018 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 29, 2017 | Dec 27, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 22, 2017 | Dec 20, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 14, 2017 | Dec 12, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 6, 2017 | Dec 4, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 1, 2017 | Nov 29, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 24, 2017 | Nov 21, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 16, 2017 | Nov 14, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2017 | Nov 8, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 1, 2017 | Oct 30, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 26, 2017 | Oct 24, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 20, 2017 | Oct 18, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 11, 2017 | Oct 9, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 4, 2017 | Oct 2, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 27, 2017 | Sep 25, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 20, 2017 | Sep 18, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 13, 2017 | Sep 11, 2017 | 000-51826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 7, 2017 | Sep 5, 2017 | 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 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 |