| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 17, 2022 | Feb 15, 2022 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 17, 2021 | Nov 15, 2021 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 15, 2021 | Nov 11, 2021 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 12, 2021 | Nov 10, 2021 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2021 | Mar 15, 2021 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2020 | Nov 16, 2020 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 17, 2020 | Nov 13, 2020 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2020 | Nov 11, 2020 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 20, 2020 | Jul 16, 2020 | 000-20322 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 18, 2020 | Nov 14, 2019 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 11, 2020 | Jun 9, 2020 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2020 | Mar 9, 2020 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 20, 2020 | Feb 18, 2020 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 11, 2019 | Dec 9, 2019 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2019 | Nov 14, 2019 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 15, 2019 | Nov 13, 2019 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 10, 2019 | Jul 31, 2019 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2019 | Jul 31, 2019 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 18, 2019 | Apr 16, 2019 | 000-20322 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 25, 2019 | Mar 22, 2019 | 000-20322 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 8, 2019 | Mar 4, 2019 | 000-20322 |