| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 29, 2023 | Dec 31, 2022 | 000-55741 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 14, 2022 | Dec 31, 2021 | 000-55741 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 19, 2021 | Dec 31, 2020 | 000-55741 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 19, 2020 | Dec 31, 2019 | 000-55741 |
| SC 13D | Open Document | Open Filing | SC 13D | Aug 20, 2018 | ||
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | May 2, 2018 | Apr 19, 2018 | 000-55741 |