| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 1, 2021 | May 28, 2021 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | May 28, 2021 | May 27, 2021 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2021 | May 14, 2021 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | May 5, 2021 | May 3, 2021 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 12, 2021 | Mar 11, 2021 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 2, 2021 | Jan 31, 2021 | 000-07617 |
| 5 | Open Document | Open Filing | FORM 5 | Jan 22, 2021 | Dec 31, 2020 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2020 | Jan 31, 2020 | 000-07617 |
| 5 | Open Document | Open Filing | FORM 5 | Jan 8, 2020 | Dec 31, 2019 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 6, 2019 | Jun 4, 2019 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 18, 2019 | Mar 15, 2019 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 20, 2019 | Feb 15, 2019 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 7, 2019 | Feb 6, 2019 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 1, 2019 | Jan 31, 2019 | 000-07617 |
| 5 | Open Document | Open Filing | FORM 5 | Jan 9, 2019 | Dec 31, 2018 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 8, 2018 | Feb 7, 2018 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 7, 2018 | Feb 6, 2018 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 1, 2018 | Jan 31, 2018 | 000-07617 |
| 5 | Open Document | Open Filing | FORM 5 | Jan 24, 2018 | Dec 31, 2017 | 000-07617 |
| 4/A | Open Document | Open Filing | FORM 4/A | Mar 20, 2017 | Feb 15, 2017 | 000-07617 |
| 4/A | Open Document | Open Filing | FORM 4/A | Mar 20, 2017 | Feb 6, 2017 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 17, 2017 | Feb 15, 2017 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 13, 2017 | Feb 9, 2017 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 8, 2017 | Feb 6, 2017 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 6, 2017 | Jan 31, 2017 | 000-07617 |
| 5 | Open Document | Open Filing | FORM 5 | Jan 13, 2017 | Dec 31, 2016 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 30, 2016 | Nov 28, 2016 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 17, 2016 | Feb 15, 2016 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 11, 2016 | Feb 9, 2016 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 9, 2016 | Feb 6, 2016 | 000-07617 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 2, 2016 | Jan 31, 2016 | 000-07617 |
| 5 | Open Document | Open Filing | FORM 5 | Jan 8, 2016 | Dec 31, 2015 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2015 | Feb 15, 2015 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 11, 2015 | Feb 10, 2015 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2015 | Feb 6, 2015 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2015 | Jan 31, 2015 | 000-07617 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 22, 2015 | Dec 31, 2014 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 30, 2014 | Sep 30, 2014 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 19, 2014 | Feb 15, 2014 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 11, 2014 | Feb 7, 2014 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2014 | Feb 6, 2014 | 000-07617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2014 | Jan 31, 2014 | 000-07617 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2014 | Dec 31, 2013 | 000-07617 |