| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 28, 2021 | Dec 27, 2021 | 000-55018 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2021 | Dec 22, 2020 | 000-55018 |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | Feb 4, 2021 | ||
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 25, 2021 | Dec 2, 2020 | 000-55018 |