| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Aug 2021 | 28 Aug 2020 | 000-27569 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Dec 2020 | 01 Dec 2020 | 000-27569 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Oct 2020 | 26 Feb 2020 | 000-27569 |