| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 21, 2021 | Dec 17, 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2021 | Nov 11, 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 18, 2021 | Mar 17, 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 17, 2020 | Dec 14, 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 20, 2019 | Dec 18, 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 18, 2019 | Jun 18, 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 10, 2019 | Jan 8, 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 21, 2018 | Dec 14, 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 9, 2018 | Jul 6, 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 8, 2018 | Jun 8, 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 10, 2018 | Jan 8, 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 20, 2017 | Dec 18, 2017 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 21, 2016 | Dec 19, 2016 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 12, 2016 | Jan 8, 2016 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2015 | Feb 6, 2015 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 29, 2014 | Jan 27, 2014 | 000-33385 |