| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Oct 2021 | 17 Sep 2021 | 000-52520 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Mar 2020 | 24 Feb 2020 | 000-52520 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Dec 2019 | 28 Nov 2014 | 000-52520 |