| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Aug 2022 | 21 Jul 2022 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jul 2021 | 22 Jul 2021 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Aug 2020 | 06 Aug 2020 | 001-12597 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2020 | 01 Jan 2020 | 001-12597 |