| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Oct 2022 | 24 Oct 2022 | 000-07642 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Dec 2021 | 31 Oct 2021 | 000-07642 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Jan 2019 | 31 Dec 2018 | 000-07642 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Apr 2017 | 05 Apr 2017 | 000-07642 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Dec 2014 | 17 Dec 2014 | 000-07642 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Dec 2014 | 17 Dec 2014 | 000-07642 |