| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | Mar 17, 2025 | Mar 13, 2025 | 000-21937 |
| 4 | Open Document | Open Filing | 4 | Mar 10, 2025 | Mar 6, 2025 | 000-21937 |
| 4 | Open Document | Open Filing | 4 | Mar 5, 2025 | Mar 3, 2025 | 000-21937 |
| 4 | Open Document | Open Filing | 4 | Feb 28, 2025 | Feb 26, 2025 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 14, 2024 | Mar 12, 2024 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 5, 2024 | Mar 1, 2024 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 14, 2023 | Mar 12, 2023 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 3, 2023 | Mar 1, 2023 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 15, 2022 | Mar 12, 2022 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 3, 2022 | Mar 1, 2022 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 16, 2021 | Mar 12, 2021 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 16, 2021 | Mar 2, 2020 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 3, 2021 | Mar 1, 2021 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 28, 2020 | Dec 22, 2020 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 15, 2020 | Dec 11, 2020 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 1, 2020 | Aug 29, 2020 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 24, 2020 | Mar 12, 2020 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 3, 2019 | Aug 30, 2019 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 10, 2019 | Jun 6, 2019 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 13, 2019 | Mar 12, 2019 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 29, 2018 | Aug 29, 2018 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 13, 2018 | Mar 12, 2018 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 8, 2018 | Mar 1, 2018 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 31, 2017 | Aug 29, 2017 | 000-21937 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 3, 2017 | Mar 1, 2017 | 000-21937 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Oct 25, 2016 | Oct 19, 2016 | 000-21937 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2016 | Feb 3, 2016 | 001-36419 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2015 | Mar 2, 2015 | 001-36419 |
| 5/A | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 13, 2015 | Dec 31, 2014 | 001-36419 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 17, 2014 | Apr 15, 2014 | 001-36419 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Apr 15, 2014 | Apr 15, 2014 | 001-36419 |