| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 06 Jul 2022 | 01 Jul 2022 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2020 | 18 Feb 2020 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Dec 2019 | 12 Dec 2019 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jul 2019 | 17 Jul 2019 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2019 | 18 Feb 2019 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Jun 2018 | 20 Jun 2018 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Mar 2018 | 21 Mar 2018 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2018 | 18 Feb 2018 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jan 2018 | 05 Jan 2018 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2017 | 18 Feb 2017 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jan 2017 | 05 Jan 2017 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2016 | 18 Feb 2016 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2016 | 05 Jan 2016 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2016 | 05 Jan 2016 | 000-51214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2015 | 18 Feb 2015 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2015 | 05 Jan 2015 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2014 | 08 Jan 2014 | 000-55084 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jan 2014 | 09 Oct 2013 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Oct 2013 | 09 Oct 2013 | 000-55084 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jan 2013 | 05 Jan 2013 | 000-51214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jan 2012 | 06 Jan 2012 | 000-51214 |