| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Sep 2025 | 04 Sep 2025 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2023 | 04 Jan 2023 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Dec 2022 | 20 Dec 2022 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Feb 2022 | 28 Feb 2022 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Feb 2021 | 19 Feb 2021 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Dec 2020 | 23 Dec 2020 | 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 | 30 Jan 2018 | 30 Jan 2018 | 000-16867 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Mar 2017 | 22 Mar 2017 | 000-16867 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2016 | 10 Feb 2016 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2016 | 10 Feb 2016 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Mar 2015 | 17 Mar 2015 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jan 2015 | 20 Jan 2015 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jul 2014 | 09 Jul 2014 | 000-16867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jul 2014 | 07 Jul 2014 | 000-16867 |