| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 9, 2022 | Dec 8, 2022 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 16, 2021 | Dec 14, 2021 | 000-22873 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | May 11, 2021 | May 10, 2021 | 000-22873 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 8, 2015 | Jan 6, 2015 | 001-35642 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jul 1, 2014 | Jul 1, 2014 | 001-35642 |