| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Dec 2021 | 17 Dec 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Nov 2021 | 11 Nov 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2021 | 17 Mar 2021 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jan 2020 | 14 Dec 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Dec 2019 | 18 Dec 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Jun 2019 | 18 Jun 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2019 | 08 Jan 2019 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Dec 2018 | 14 Dec 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jul 2018 | 06 Jul 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jun 2018 | 08 Jun 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2018 | 08 Jan 2018 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Dec 2017 | 18 Dec 2017 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Dec 2016 | 19 Dec 2016 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jan 2016 | 08 Jan 2016 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Feb 2015 | 06 Feb 2015 | 000-33385 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2014 | 27 Jan 2014 | 000-33385 |