| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 5, 2021 | Oct 1, 2021 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2021 | Mar 10, 2021 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2021 | Mar 9, 2021 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 23, 2021 | Feb 22, 2021 | 001-07665 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 10, 2020 | May 14, 2020 | 001-07665 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 10, 2020 | Mar 6, 2020 | 001-07665 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 10, 2020 | Mar 4, 2020 | 001-07665 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 10, 2020 | Mar 3, 2020 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 15, 2020 | May 14, 2020 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2020 | Mar 6, 2020 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2020 | Mar 4, 2020 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2020 | Mar 3, 2020 | 001-07665 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 19, 2019 | Nov 1, 2019 | 001-07665 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 5, 2019 | Nov 1, 2019 | 001-07665 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 28, 2019 | Oct 25, 2019 | 001-07665 |