| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2022 | Jan 2, 2022 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2021 | Jan 2, 2021 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 16, 2020 | Dec 14, 2020 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 6, 2020 | Aug 4, 2020 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2020 | Jan 2, 2020 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 23, 2019 | Aug 21, 2019 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2019 | Jan 2, 2019 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 5, 2018 | Sep 5, 2018 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2018 | Jan 2, 2018 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 30, 2017 | Aug 28, 2017 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2017 | Jan 2, 2017 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2016 | Jan 2, 2016 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 3, 2015 | Jul 31, 2015 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2015 | Jan 2, 2015 | 000-27754 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2014 | Jan 2, 2014 | 000-27754 |