| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Sep 2021 | 20 Sep 2021 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Sep 2021 | 14 Sep 2021 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Sep 2021 | 01 Sep 2021 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Aug 2021 | 26 Aug 2021 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Aug 2021 | 24 Aug 2021 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Aug 2021 | 13 Aug 2021 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Oct 2020 | 07 Oct 2020 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2018 | 06 Dec 2018 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Dec 2018 | 04 Dec 2018 | 000-03978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Dec 2018 | 01 Dec 2018 | 000-03978 |