| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2023 | 01 May 2023 | 000-21344 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Dec 2020 | 21 Dec 2020 | 000-21344 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Aug 2020 | 04 Aug 2020 | 000-21344 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Dec 2019 | 20 Dec 2019 | 000-21344 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2018 | 14 May 2018 | 000-21344 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2017 | 14 Feb 2017 | 000-21344 |