| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2021 | May 12, 2021 | 001-10235 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 30, 2020 | Nov 25, 2020 | 001-10235 |
| 4 | Open Document | Open Filing | Oct 30, 2020 | Oct 30, 2020 | 001-37904 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 29, 2020 | Jul 27, 2020 | 001-10235 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2020 | May 7, 2020 | 001-10235 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 12, 2019 | Nov 7, 2019 | 001-10235 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2019 | May 10, 2019 | 001-10235 |
| 4 | Open Document | Open Filing | Feb 27, 2019 | Feb 25, 2019 | 001-37904 | |
| 4 | Open Document | Open Filing | Nov 5, 2018 | Nov 2, 2018 | 001-37904 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 16, 2018 | Aug 16, 2018 | 001-10235 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 24, 2018 | May 22, 2018 | 001-37904 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2018 | May 8, 2018 | 001-10235 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 26, 2018 | Apr 25, 2018 | 001-10235 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 9, 2018 | Mar 7, 2018 | 001-37904 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 28, 2018 | Feb 26, 2018 | 001-37904 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 28, 2018 | Feb 21, 2018 | 001-37904 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 22, 2017 | Mar 21, 2017 | 000-04063 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2017 | Feb 22, 2017 | 001-10235 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 5, 2017 | Jan 3, 2017 | 000-04063 |
| 4 | Open Document | Open Filing | FORM 4 - | Nov 9, 2016 | Nov 8, 2016 | 000-04063 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 23, 2016 | Feb 19, 2016 | 001-10235 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 6, 2016 | Jan 4, 2016 | 000-04063 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2015 | Feb 20, 2015 | 001-10235 |
| 4 | Open Document | Open Filing | FORM 4 - | Feb 17, 2015 | Feb 12, 2015 | 000-04063 |
| 4 | Open Document | Open Filing | FORM 4 - | Feb 9, 2015 | Feb 6, 2015 | 000-04063 |
| 4 | Open Document | Open Filing | FORM 4 - | Feb 3, 2015 | Jan 30, 2015 | 000-04063 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 6, 2015 | Jan 2, 2015 | 000-04063 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2014 | Feb 13, 2014 | 001-10235 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 6, 2014 | Jan 2, 2014 | 000-04063 |