| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2021 | May 12, 2021 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2021 | Feb 26, 2021 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 29, 2021 | Jan 28, 2021 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 10, 2020 | Nov 9, 2020 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 11, 2020 | Aug 10, 2020 | 001-16189 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2020 | Jun 1, 2020 | 001-16189 |