| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jun 2021 | 17 Jun 2021 | 001-12252 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jun 2020 | 25 Jun 2020 | 001-12252 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2019 | 27 Jun 2019 | 001-12252 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Nov 2018 | 31 Oct 2018 | 001-12252 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Nov 2018 | 31 Oct 2018 | 001-12252 |