| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 11, 2021 | May 11, 2021 | 001-37640 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2021 | Jan 31, 2021 | 001-37640 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2020 | Feb 14, 2020 | 001-37640 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2020 | Jan 31, 2020 | 001-37640 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 26, 2019 | Jun 19, 2019 | 001-37640 |