| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | FORM 5 | Feb 14, 2023 | Dec 31, 2022 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 25, 2022 | Aug 23, 2022 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2022 | May 18, 2022 | 000-24960 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 14, 2022 | Dec 31, 2021 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2021 | May 19, 2021 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 6, 2020 | Jul 1, 2020 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 3, 2020 | Feb 28, 2020 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 4, 2019 | May 31, 2019 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | May 10, 2019 | May 8, 2019 | 000-24960 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 14, 2019 | Dec 31, 2018 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2018 | May 17, 2018 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | May 18, 2017 | May 16, 2017 | 000-24960 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 14, 2017 | Dec 31, 2016 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2016 | May 18, 2016 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 24, 2015 | May 14, 2015 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 30, 2015 | Apr 28, 2015 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 2, 2015 | Sep 7, 2005 | 000-24960 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 17, 2015 | Oct 31, 2014 | 000-24960 |
| 4 | Open Document | Open Filing | FORM 4 | May 27, 2014 | May 22, 2014 | 000-24960 |