| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Aug 2023 | 31 Dec 2022 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2023 | 04 Jan 2023 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Feb 2022 | 28 Feb 2022 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2020 | 25 Feb 2020 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Feb 2019 | 05 Feb 2019 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2017 | 01 Aug 2017 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2016 | 10 Feb 2016 | 000-16867 |