| 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 | PRIMARY DOCUMENT | Sep 3, 2021 | Sep 1, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 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 23, 2021 | Feb 19, 2021 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 3, 2020 | Sep 1, 2020 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2020 | Feb 25, 2020 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 22, 2020 | Jan 17, 2020 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 3, 2019 | Nov 29, 2019 | 001-32590 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 3, 2019 | Oct 31, 2017 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2019 | Jan 18, 2019 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 22, 2018 | Aug 20, 2018 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2018 | Jan 19, 2018 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2017 | Nov 8, 2017 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 1, 2017 | Oct 31, 2017 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 31, 2017 | May 23, 2017 | 001-32590 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 24, 2017 | Jan 20, 2017 | 001-32590 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 6, 2016 | May 4, 2016 | 001-32590 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 17, 2016 | Feb 12, 2016 | 001-32590 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 26, 2016 | Jan 22, 2016 | 001-32590 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 21, 2015 | Jan 16, 2015 | 001-32590 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 9, 2014 | May 7, 2014 | 001-32590 |