| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jun 2021 | 14 Jul 2017 | 000-27569 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Oct 2020 | 26 Feb 2020 | 000-27569 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 May 2018 | 24 Oct 2017 | 000-27569 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 May 2018 | 30 Jun 2017 | 000-27569 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 May 2018 | 12 Jun 2017 | 000-27569 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Nov 2017 | 24 Oct 2017 | 000-27569 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Nov 2017 | 24 Oct 2017 | 000-27569 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Jul 2017 | 30 Jun 2017 | 000-27569 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Jul 2017 | 12 Jun 2017 | 000-27569 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Jul 2017 | 29 Jun 2017 | 000-27569 |