| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 14, 2021 | Dec 13, 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 19, 2021 | Nov 11, 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 30, 2020 | Nov 2, 2020 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 19, 2020 | Aug 10, 2020 | 000-33385 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 18, 2020 | Aug 10, 2020 | 000-33385 |