| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 19, 2024 | Apr 19, 2024 | 001-08951 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Aug 2, 2023 | Aug 1, 2023 | 001-08951 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Aug 3, 2022 | Aug 1, 2022 | 001-08951 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Aug 3, 2021 | Aug 1, 2021 | 001-08951 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 4, 2020 | Aug 1, 2020 | 001-08951 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 5, 2019 | Aug 1, 2019 | 001-08951 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 17, 2018 | Dec 13, 2018 | 001-08951 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2018 | Aug 1, 2018 | 001-08951 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 3, 2017 | Aug 1, 2017 | 001-08951 |
| 3/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 28, 2017 | Jun 26, 2017 | 001-08951 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 28, 2017 | Jun 26, 2017 | 001-08951 |