| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2021 | May 6, 2021 | 001-34055 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2020 | Oct 29, 2019 | 001-34055 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 6, 2018 | Feb 2, 2018 | 001-34055 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 8, 2016 | Jul 6, 2016 | 001-34055 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 8, 2015 | Oct 6, 2015 | 001-34055 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 22, 2015 | Dec 17, 2014 | 001-34055 |