| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 10, 2021 | May 13, 2021 | 001-37700 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 18, 2017 | May 16, 2017 | 001-37700 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 27, 2016 | Sep 20, 2016 | 001-37700 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2016 | Feb 24, 2016 | 001-37700 |