| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 28, 2021 | Jul 27, 2021 | 000-27446 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2021 | Apr 12, 2021 | 000-27446 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 27, 2020 | Jul 23, 2020 | 000-27446 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 1, 2019 | Oct 31, 2019 | 000-27446 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 29, 2019 | Jul 25, 2019 | 000-27446 |
| 3 | Open Document | Open Filing | FORM 3 | Jul 26, 2019 | Jul 25, 2019 | 000-27446 |