| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Oct 2021 | 02 Sep 2021 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Aug 2020 | 26 Aug 2020 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Sep 2019 | 04 Sep 2019 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Sep 2017 | 07 Sep 2017 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Oct 2016 | 08 Sep 2016 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Sep 2015 | 13 Aug 2015 | 000-26680 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Sep 2015 | 13 Aug 2015 | 000-26680 |