| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2022 | 15 Feb 2022 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Sep 2021 | 15 Sep 2021 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2021 | 01 Jul 2021 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2021 | 28 May 2021 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Mar 2021 | 05 Mar 2021 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2021 | 15 Feb 2021 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Sep 2020 | 15 Sep 2020 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2020 | 01 Jul 2020 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2020 | 29 May 2020 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Feb 2020 | 15 Feb 2020 | 000-27130 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Sep 2019 | 16 Sep 2019 | 000-27130 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Aug 2019 | 14 Aug 2019 | 000-27130 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Mar 2012 | 05 Mar 2012 | 000-17017 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Mar 2012 | 01 Mar 2012 | 000-17017 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2012 | 15 Feb 2012 | 000-17017 |