| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 8, 2021 | Jun 4, 2021 | 000-17204 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 9, 2019 | Sep 30, 2019 | 000-17204 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Feb 18, 2014 |