| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2022 | Apr 3, 2022 | 001-11252 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 22, 2021 | Dec 21, 2021 | 001-11252 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 1, 2020 | Sep 21, 2020 | 001-11252 |