| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Nov 2021 | 02 Oct 2020 | 001-13458 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Oct 2020 | 02 Oct 2020 | 001-13458 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Nov 2019 | 14 Nov 2019 | 001-13458 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2018 | 19 Jun 2018 | 001-13458 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Aug 2017 | 17 Aug 2017 | 001-13458 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Aug 2017 | 09 Aug 2017 | 001-13458 |