| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2023 | 02 May 2023 | 000-15204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Apr 2023 | 26 Apr 2023 | 000-15204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2023 | 24 Apr 2023 | 000-15204 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jan 2023 | 31 Dec 2022 | 000-15204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2022 | 12 May 2022 | 000-15204 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2022 | 11 May 2022 | 000-15204 |
| 4 | Open Document | Open Filing | 03 Jan 2020 | 31 Dec 2019 | 001-35302 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Dec 2016 | 30 Nov 2016 | 001-35302 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Dec 2015 | 30 Nov 2015 | 001-35302 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Oct 2014 | 30 Sep 2014 | 001-35302 |