| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Apr 25, 2022 | Dec 30, 2020 | 000-51229 | |
| 4 | Open Document | Open Filing | Apr 25, 2022 | May 11, 2020 | 000-51229 | |
| 4 | Open Document | Open Filing | Apr 25, 2022 | Dec 30, 2019 | 000-51229 | |
| 3 | Open Document | Open Filing | Apr 25, 2022 | Jun 18, 2018 | 000-51229 |