| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Sep 2021 | 07 Feb 2019 | 000-54218 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Oct 2018 | 13 Aug 2018 | 000-54218 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Oct 2018 | 13 Aug 2018 | 000-54218 |
| 4 | Open Document | Open Filing | 05 Jun 2018 | 01 Jun 2018 | 001-37509 | |
| 4 | Open Document | Open Filing | 4 | 22 May 2018 | 18 May 2018 | 001-37509 |
| 4 | Open Document | Open Filing | 4 | 02 Mar 2017 | 27 Feb 2017 | 001-37509 |
| 3 | Open Document | Open Filing | 3 | 02 Mar 2017 | 27 Feb 2017 | 001-37509 |