| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Aug 2021 | 18 Aug 2021 | 000-12456 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jun 2021 | 29 Jun 2021 | 000-12456 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jun 2020 | 24 Jun 2020 | 000-12456 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Sep 2019 | 21 Aug 2019 | 000-12456 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 04 Jan 2019 | 01 Jan 2019 | 000-12456 |