| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Nov 23, 2022 | Nov 16, 2022 | 000-55802 | |
| 5 | Open Document | Open Filing | Feb 3, 2021 | Dec 31, 2020 | 000-55802 | |
| 4 | Open Document | Open Filing | Sep 25, 2019 | Sep 23, 2019 | 000-55802 | |
| 4 | Open Document | Open Filing | Sep 13, 2019 | Sep 11, 2019 | 000-55802 | |
| 4 | Open Document | Open Filing | Dec 31, 2018 | Dec 27, 2018 | 000-55802 | |
| 4 | Open Document | Open Filing | Dec 27, 2018 | Dec 24, 2018 | 000-55802 | |
| 4 | Open Document | Open Filing | Dec 20, 2018 | Dec 18, 2018 | 000-55802 | |
| 4 | Open Document | Open Filing | Dec 14, 2018 | Nov 19, 2018 | 000-55802 | |
| 3 | Open Document | Open Filing | Jun 23, 2017 | Jun 23, 2017 | 000-55802 |