| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 10, 2021 | Aug 10, 2021 | 001-10026 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 4, 2019 | Jun 4, 2019 | 001-10026 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2016 | Dec 31, 2015 | 001-10026 |