| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 7, 2021 | Dec 3, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 3, 2021 | Dec 1, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 3, 2021 | Sep 1, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2021 | Jun 1, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2021 | Mar 1, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2021 | Feb 8, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 3, 2020 | Dec 1, 2020 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 5, 2020 | Nov 3, 2020 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 26, 2020 | Oct 19, 2020 | 001-32590 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 26, 2020 | Oct 19, 2020 | 001-32590 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 26, 2017 | Jun 23, 2017 | 000-23565 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 5, 2017 | Jun 1, 2017 | 000-23565 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 6, 2016 | Sep 1, 2016 | 000-23565 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 1, 2015 | Jul 1, 2015 | 000-23565 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 2, 2014 | Jul 1, 2014 | 000-23565 |