| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | Sep 21, 2022 | Aug 31, 2022 | 001-39184 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 7, 2022 | Aug 31, 2022 | 001-39184 |
| 4 | Open Document | Open Filing | Jan 3, 2022 | Dec 31, 2021 | 001-39184 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 16, 2020 | Jun 15, 2020 | 001-39184 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 16, 2019 | Dec 13, 2019 | 000-27163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 13, 2019 | Sep 11, 2019 | 000-27163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 30, 2019 | Jan 28, 2019 | 000-27163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2017 | May 18, 2017 | 000-27163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 27, 2015 | Aug 25, 2015 | 000-27163 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 1, 2014 | Nov 26, 2014 | 000-27163 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 20, 2014 | Aug 18, 2014 | 000-27163 |