| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 22, 2025 | May 21, 2025 | 000-23702 | |
| 4 | Open Document | Open Filing | May 13, 2025 | May 12, 2025 | 000-23702 | |
| 4 | Open Document | Open Filing | May 23, 2024 | May 22, 2024 | 000-23702 | |
| 4 | Open Document | Open Filing | May 25, 2023 | May 24, 2023 | 000-23702 | |
| 4 | Open Document | Open Filing | May 27, 2022 | May 25, 2022 | 000-23702 | |
| 4 | Open Document | Open Filing | May 28, 2021 | May 26, 2021 | 000-23702 | |
| 4 | Open Document | Open Filing | Jul 2, 2020 | Jul 1, 2020 | 000-23702 | |
| 4 | Open Document | Open Filing | FORM 4 | Jun 4, 2019 | Jun 3, 2019 | 000-23702 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 30, 2018 | May 30, 2018 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 30, 2018 | May 30, 2018 | 000-23702 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 3, 2018 | Apr 2, 2018 | 000-23702 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 18, 2015 | Mar 16, 2015 | 001-12302 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2015 | Mar 12, 2015 | 001-12302 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 22, 2015 | Jan 20, 2015 | 001-12302 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2014 | Jun 30, 2014 | 001-12302 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 28, 2014 | May 23, 2014 | 001-12302 |