| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 16 Jul 2021 | 08 Jul 2021 | 000-21990 | |
| 4 | Open Document | Open Filing | 24 Nov 2020 | 20 Nov 2020 | 000-21990 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Oct 2017 | 02 Oct 2017 | 000-13789 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Oct 2017 | 02 Oct 2017 | 000-13789 |