| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2024 | May 15, 2024 | 000-17820 |
| 5 | Open Document | Open Filing | ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | Jan 30, 2024 | Dec 31, 2023 | 000-17820 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jan 20, 2023 | Jan 18, 2023 | 000-17820 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jan 21, 2022 | Jan 19, 2022 | 000-17820 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jan 22, 2021 | Jan 20, 2021 | 000-17820 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Aug 5, 2020 | Aug 4, 2020 | 000-17820 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 25, 2020 | Mar 23, 2020 | 000-17820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 24, 2020 | Mar 23, 2020 | 000-17820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 16, 2020 | Jan 15, 2020 | 000-17820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 17, 2019 | Jan 16, 2019 | 000-17820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2018 | Jan 17, 2018 | 000-17820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 20, 2017 | Jan 18, 2017 | 000-17820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2016 | Feb 24, 2016 | 000-17820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 11, 2016 | Jan 7, 2016 | 000-17820 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 11, 2016 | Jan 7, 2016 | 000-17820 |