| 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 | 25 Oct 2021 | 22 Oct 2021 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Oct 2021 | 30 Sep 2021 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2021 | 01 Jul 2021 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Mar 2021 | 05 Mar 2021 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Aug 2020 | 10 Aug 2020 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jun 2019 | 24 Jun 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2019 | 24 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 May 2019 | 23 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2019 | 21 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2019 | 08 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jul 2018 | 06 Jul 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2018 | 09 May 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Mar 2018 | 26 Mar 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2018 | 20 Mar 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jun 2017 | 27 Jun 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jun 2017 | 13 Jun 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2017 | 25 May 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 | 10 Mar 2016 | 08 Mar 2016 | 000-26497 |
| 4 | Open Document | Open Filing | 20 Nov 2014 | 19 Nov 2014 | 000-26497 | |
| 4 | Open Document | Open Filing | 01 Jul 2014 | 01 Jul 2014 | 000-26497 | |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 19 Mar 2014 | 17 Mar 2014 | 000-26497 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 17 Mar 2014 | 14 Mar 2014 | 000-26497 |