| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Dec 28, 2022 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 12, 2022 | Dec 9, 2022 | 000-27205 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 11, 2022 | Dec 31, 2021 | 000-27205 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Dec 20, 2021 | ||
| SC 13D | Open Document | Open Filing | SC 13D | Jul 20, 2021 | ||
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2021 | Dec 31, 2020 | 000-27205 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2020 | May 22, 2020 | 000-27205 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 20, 2020 | May 18, 2020 | 000-27205 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2020 | Dec 31, 2019 | 000-27205 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2019 | Dec 31, 2018 | 000-27205 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 30, 2018 | Nov 29, 2018 | 000-27205 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 15, 2018 | Dec 31, 2017 | 000-27205 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 12, 2017 | Dec 6, 2017 | 000-27205 |
| 5/A | Open Document | Open Filing | FORM 5/A | Feb 22, 2017 | Dec 31, 2016 | 000-27205 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 14, 2017 | Dec 31, 2016 | 000-27205 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 9, 2016 | Dec 31, 2015 | 000-27205 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 8, 2015 | Dec 4, 2015 | 000-27205 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 10, 2015 | Dec 31, 2014 | 000-27205 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 8, 2014 | Dec 5, 2014 | 000-27205 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 15, 2014 | Aug 15, 2014 | 000-27205 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 7, 2014 | Feb 13, 2013 | 000-27205 |