| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 13, 2024 | Dec 11, 2024 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 18, 2023 | Dec 14, 2023 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 12, 2022 | Dec 8, 2022 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 26, 2022 | Apr 22, 2022 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 9, 2021 | Dec 7, 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 16, 2021 | Jun 15, 2021 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 11, 2020 | Dec 9, 2020 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 13, 2020 | Oct 13, 2020 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 22, 2020 | Sep 21, 2020 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 6, 2020 | Jul 6, 2020 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 22, 2020 | Jun 19, 2020 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 15, 2020 | Jun 14, 2020 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 18, 2020 | Mar 17, 2020 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 11, 2019 | Dec 9, 2019 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 11, 2019 | Sep 11, 2019 | 001-09232 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 17, 2019 | Jun 14, 2019 | 001-09232 |
| 3 | Open Document | Open Filing | FORM 3 | May 3, 2019 | May 1, 2019 | 001-09232 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 12, 2018 | Dec 11, 2018 | 000-26841 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 19, 2017 | Dec 11, 2017 | 000-26841 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 3, 2017 | Jun 30, 2016 | 000-26841 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 14, 2016 | Dec 13, 2016 | 000-26841 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 1, 2016 | Jun 30, 2016 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 6, 2016 | Jan 4, 2016 | 001-16503 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 12, 2015 | Nov 9, 2015 | 001-16503 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 31, 2014 | Dec 26, 2014 | 001-16503 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 18, 2014 | Dec 16, 2014 | 001-16503 |