| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 20, 2025 | Feb 18, 2025 | 000-23071 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 18, 2024 | Mar 14, 2024 | 000-23071 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 18, 2024 | Mar 14, 2024 | 000-23071 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2020 | Mar 15, 2020 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2020 | Mar 3, 2020 | 001-02979 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2020 | Feb 10, 2020 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 30, 2019 | May 28, 2019 | 001-02979 |
| 3/A | Open Document | Open Filing | PRIMARY DOCUMENT | May 17, 2019 | Mar 28, 2019 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 9, 2019 | Apr 7, 2019 | 001-02979 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2019 | Mar 28, 2019 | 001-02979 |