| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | Sep 11, 2025 | Sep 10, 2025 | 000-27130 |
| 4 | Open Document | Open Filing | 4 | Jan 6, 2025 | Jan 2, 2025 | 000-27130 |
| 4 | Open Document | Open Filing | 4 | Sep 12, 2024 | Sep 11, 2024 | 000-27130 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 4, 2024 | Jan 2, 2024 | 000-27130 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 14, 2023 | Sep 13, 2023 | 000-27130 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 12, 2022 | Sep 9, 2022 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 13, 2021 | Sep 9, 2021 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 11, 2020 | Sep 9, 2020 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 6, 2020 | Feb 4, 2020 | 000-27130 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 6, 2020 | Jan 31, 2020 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2019 | Mar 5, 2019 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 7, 2018 | Dec 5, 2018 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 16, 2018 | Nov 14, 2018 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 23, 2018 | Oct 22, 2018 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 7, 2018 | Sep 5, 2018 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 2018 | Jun 5, 2018 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2018 | Mar 5, 2018 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2018 | Feb 12, 2018 | 001-34756 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 2, 2017 | Jun 1, 2017 | 001-36067 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 15, 2017 | Mar 13, 2017 | 001-34756 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 13, 2017 | Mar 2, 2017 | 001-34756 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 16, 2016 | Jun 14, 2016 | 001-36067 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 8, 2015 | Sep 3, 2015 | 001-36067 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Sep 8, 2015 | Sep 3, 2015 | 001-36067 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 20, 2015 | Aug 18, 2015 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2015 | Mar 2, 2015 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 24, 2014 | Dec 23, 2014 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 4, 2014 | Sep 2, 2014 | 001-34756 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2014 | Apr 17, 2014 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2014 | Apr 17, 2014 | 001-34756 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 15, 2014 | Jan 13, 2014 | 001-34756 |