| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 27, 2022 | May 25, 2022 | 001-06615 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2022 | May 10, 2022 | 001-06615 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2022 | Mar 3, 2022 | 001-06615 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 27, 2021 | May 25, 2021 | 001-06615 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2021 | Mar 3, 2021 | 001-06615 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2020 | Mar 3, 2020 | 001-06615 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 7, 2019 | Nov 1, 2019 | 001-06615 |