| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Sep 8, 2021 | Sep 7, 2021 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 3, 2018 | Apr 2, 2018 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 24, 2014 | Feb 20, 2014 | 000-24657 |