| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 18, 2023 | Dec 14, 2023 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 27, 2023 | Jun 25, 2023 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 14, 2023 | Mar 10, 2023 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 9, 2023 | Mar 7, 2023 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 16, 2022 | Dec 14, 2022 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 28, 2022 | Sep 26, 2022 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 26, 2022 | Aug 24, 2022 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 28, 2022 | Jun 25, 2022 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 14, 2022 | Mar 10, 2022 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 5, 2022 | Jan 3, 2022 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 22, 2021 | Dec 20, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 16, 2021 | Dec 14, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 3, 2021 | Dec 1, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 1, 2021 | Nov 29, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 5, 2021 | Nov 3, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 3, 2021 | Nov 1, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 5, 2021 | Oct 1, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 28, 2021 | Sep 26, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 24, 2021 | Aug 24, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 17, 2021 | Sep 15, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 3, 2021 | Sep 1, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 28, 2021 | Jul 26, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 2, 2021 | Jun 30, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 29, 2021 | Jun 25, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 2, 2021 | May 28, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 4, 2021 | Apr 30, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 30, 2021 | Mar 26, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 2, 2021 | Feb 26, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 3, 2021 | Feb 1, 2021 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 16, 2020 | Dec 14, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 30, 2020 | Sep 28, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 29, 2020 | Sep 26, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 26, 2020 | Aug 24, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 20, 2020 | Aug 18, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 29, 2020 | Jun 25, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 29, 2020 | Jun 25, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 20, 2020 | May 18, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 10, 2020 | Mar 8, 2020 | 000-26770 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 30, 2019 | Sep 26, 2019 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 18, 2019 | Sep 17, 2019 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 10, 2019 | Sep 8, 2019 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 12, 2019 | Mar 8, 2019 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 14, 2018 | Dec 13, 2018 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 19, 2017 | Dec 15, 2017 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 2, 2017 | Jan 31, 2017 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 16, 2016 | Nov 14, 2016 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 17, 2016 | Mar 15, 2016 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 1, 2016 | Jan 31, 2016 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 18, 2015 | Dec 16, 2015 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 4, 2015 | Jul 31, 2015 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 9, 2015 | Mar 5, 2015 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 3, 2015 | Jan 31, 2015 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 4, 2014 | Jul 31, 2014 | 000-26770 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 17, 2014 | Jun 12, 2014 | 000-26770 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jun 17, 2014 | Jun 12, 2014 | 000-26770 |