| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 01 Jun 2022 | 27 May 2022 | 000-55760 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Mar 2021 | 01 Mar 2021 | 000-55760 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Dec 2017 | 15 Dec 2017 | 000-55760 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2017 | 15 Mar 2017 | 000-55761 |