| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jul 19, 2022 | Jul 15, 2022 | 001-38312 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 9, 2021 | Aug 5, 2021 | 001-38312 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 12, 2020 | Aug 10, 2020 | 001-38312 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 8, 2019 | Aug 7, 2019 | 001-38312 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 5, 2019 | Aug 1, 2019 | 001-38312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 23, 2018 | Oct 21, 2018 | 001-38312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 13, 2018 | Aug 10, 2018 | 001-38312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 9, 2018 | Aug 7, 2018 | 001-38312 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 27, 2018 | Jul 25, 2018 | 001-38312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 26, 2018 | Jul 25, 2018 | 001-38312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 24, 2017 | Oct 21, 2017 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 21, 2017 | Sep 20, 2017 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 5, 2017 | Aug 10, 2017 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 26, 2017 | Jul 25, 2017 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 25, 2016 | Oct 21, 2016 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 22, 2016 | Sep 20, 2016 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 26, 2016 | Jul 22, 2016 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 23, 2015 | Oct 21, 2015 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 23, 2015 | Sep 22, 2015 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 24, 2014 | Oct 21, 2014 | 000-21783 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2014 | Mar 20, 2014 | 000-21783 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 1, 2014 | Mar 20, 2014 | 000-21783 |