| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 23, 2022 | May 19, 2022 | 001-32383 |
| 4 | Open Document | Open Filing | FORM 4 | May 24, 2021 | May 20, 2021 | 001-32383 |
| 4 | Open Document | Open Filing | FORM 4 | May 26, 2020 | May 21, 2020 | 001-32383 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2019 | May 17, 2019 | 001-32383 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 16, 2018 | Jan 11, 2018 | 001-32383 |
| 3 | Open Document | Open Filing | FORM 3 | Jan 4, 2018 | Jan 1, 2018 | 001-32383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 8, 2017 | Sep 8, 2017 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 6, 2017 | Sep 6, 2017 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 5, 2017 | Jul 3, 2017 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 2, 2016 | Sep 1, 2016 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2016 | Aug 22, 2016 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 5, 2016 | Jul 1, 2016 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2016 | Mar 8, 2016 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 16, 2015 | Sep 16, 2015 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 7, 2015 | Jul 7, 2015 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2015 | Jul 1, 2015 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 10, 2014 | Dec 8, 2014 | 000-05151 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 16, 2014 | Sep 16, 2014 | 000-05151 |