| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Apr 7, 2022 | Apr 6, 2022 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 29, 2022 | Mar 27, 2022 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 3, 2022 | Feb 3, 2022 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 2, 2022 | Feb 1, 2022 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 25, 2021 | Jun 23, 2021 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 30, 2021 | Mar 27, 2021 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 25, 2020 | Jun 23, 2020 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2020 | Mar 27, 2020 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 19, 2020 | Feb 15, 2020 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 25, 2019 | Jun 23, 2019 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 29, 2019 | Mar 27, 2019 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 20, 2019 | Feb 15, 2019 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 26, 2018 | Jun 23, 2018 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 29, 2018 | Mar 27, 2018 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 20, 2018 | Feb 15, 2018 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 27, 2017 | Jun 23, 2017 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | May 18, 2017 | May 16, 2017 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 29, 2017 | Mar 27, 2017 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 13, 2016 | Sep 12, 2016 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 27, 2016 | Jun 23, 2016 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 14, 2015 | Sep 11, 2015 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 25, 2015 | Jun 23, 2015 | 001-36441 |
| 4/A | Open Document | Open Filing | FORM 4/A | Aug 18, 2014 | May 7, 2014 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2014 | May 7, 2014 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2014 | May 7, 2014 | 000-51557 |
| 3 | Open Document | Open Filing | FORM 3 | May 6, 2014 | May 6, 2014 | 001-36441 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2014 | Feb 23, 2014 | 000-51557 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 30, 2014 | Jan 25, 2014 | 000-51557 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 30, 2014 | Nov 6, 2012 | 000-51557 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 28, 2014 | Jan 25, 2014 | 000-51557 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 24, 2014 | Nov 6, 2012 | 000-51557 |