| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2022 | Dec 31, 2021 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2021 | Apr 26, 2021 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 23, 2021 | Apr 21, 2021 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 24, 2021 | Mar 23, 2021 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2021 | Mar 18, 2021 | 001-33147 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Feb 5, 2021 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 9, 2020 | Apr 6, 2020 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 6, 2020 | Mar 4, 2020 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 6, 2019 | Aug 2, 2019 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2019 | May 3, 2019 | 001-33147 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 11, 2019 | Apr 8, 2019 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 10, 2019 | Apr 8, 2019 | 001-33147 |
| SC 13D | Open Document | Open Filing | SC 13D | Mar 14, 2019 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2019 | Mar 1, 2019 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 4, 2018 | Nov 30, 2018 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 11, 2018 | Sep 10, 2018 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | May 31, 2018 | May 31, 2018 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Apr 6, 2018 | Apr 5, 2018 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Apr 4, 2018 | Apr 2, 2018 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Mar 6, 2018 | Mar 2, 2018 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Dec 1, 2017 | Aug 9, 2017 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Nov 14, 2017 | Nov 10, 2017 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Nov 9, 2017 | Nov 7, 2017 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | May 12, 2017 | May 10, 2017 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | May 10, 2017 | Feb 24, 2017 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Apr 5, 2017 | Apr 3, 2017 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Mar 23, 2017 | Mar 21, 2017 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Aug 12, 2016 | Aug 10, 2016 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | May 18, 2016 | May 16, 2016 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Apr 22, 2016 | Apr 20, 2016 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Mar 2, 2016 | Feb 29, 2016 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 17, 2015 | Dec 16, 2015 | 001-33147 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 3, 2015 | Dec 1, 2015 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Apr 2, 2015 | Mar 31, 2015 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Mar 23, 2015 | Mar 19, 2015 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | Mar 6, 2015 | Mar 6, 2015 | 001-33147 |
| 4 | Open Document | Open Filing | 4 | May 21, 2014 | May 6, 2014 | 001-33147 |