| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 6, 2021 | Dec 2, 2021 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 19, 2021 | Nov 18, 2021 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 9, 2021 | Nov 6, 2021 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 4, 2020 | Dec 2, 2020 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 4, 2019 | Dec 2, 2019 | 000-22818 |
| 3 | Open Document | Open Filing | FORM 3 | Dec 4, 2019 | Dec 2, 2019 | 000-22818 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 24, 2019 | Sep 23, 2019 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 9, 2019 | May 8, 2019 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 26, 2019 | Apr 25, 2019 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2019 | Mar 20, 2019 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2019 | Feb 26, 2019 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2019 | Feb 22, 2019 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2019 | Feb 19, 2019 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 22, 2018 | Aug 21, 2018 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 23, 2018 | Mar 22, 2018 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 22, 2018 | Feb 20, 2018 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 20, 2018 | Feb 16, 2018 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 13, 2017 | Oct 11, 2017 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2017 | May 18, 2017 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 20, 2017 | Apr 18, 2017 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 20, 2017 | Mar 16, 2017 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2017 | Feb 22, 2017 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 31, 2016 | Oct 28, 2016 | 001-00183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2016 | Feb 16, 2016 | 001-00183 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 19, 2015 | Aug 10, 2015 | 001-00183 |