| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2023 | 14 Mar 2023 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2022 | 01 Mar 2022 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2022 | 02 Jan 2022 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jan 2021 | 19 Jan 2021 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Aug 2020 | 10 Aug 2020 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2018 | 09 May 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2017 | 25 May 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2017 | 10 May 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Apr 2017 | 04 Apr 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Apr 2017 | 31 Mar 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2017 | 29 Mar 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2017 | 29 Mar 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2017 | 21 Mar 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Feb 2017 | 24 Feb 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jul 2016 | 30 Jun 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jun 2016 | 03 Jun 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 May 2016 | 25 May 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2016 | 10 May 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Mar 2016 | 08 Mar 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Oct 2015 | 23 Oct 2015 | 000-26497 |
| 4 | Open Document | Open Filing | 20 Mar 2015 | 19 Mar 2015 | 000-26497 | |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 17 Mar 2014 | 14 Mar 2014 | 000-26497 |
| 4 | Open Document | Open Filing | STATMENT OF CHANGES OF BENEFICIAL OWNERSHIP | 11 Mar 2014 | 23 Dec 2013 | 000-26497 |