| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2023 | 02 Aug 2023 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2022 | 19 May 2022 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jul 2021 | 08 Jul 2021 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jun 2021 | 31 Mar 2021 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Sep 2020 | 09 Sep 2020 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Aug 2020 | 19 Aug 2020 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jul 2018 | 05 Jul 2018 | 001-33899 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jan 2018 | 31 Dec 2017 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Aug 2017 | 15 Aug 2017 | 001-33899 |
| 4 | Open Document | Open Filing | 06 Dec 2016 | 02 Dec 2016 | 001-33899 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2016 | 12 May 2016 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Nov 2015 | 30 Oct 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2015 | 09 Jun 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2015 | 21 May 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2015 | 15 May 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Jun 2014 | 13 Jun 2014 | 001-33899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Jan 2014 | 17 Jan 2014 | 000-17204 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Dec 2013 | 05 Dec 2013 | 001-12579 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Jul 2013 | 07 Nov 2012 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2013 | 30 May 2013 | 001-33899 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Dec 2012 | 03 Dec 2012 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Oct 2012 | 02 Oct 2012 | 811-22328 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2012 | 25 May 2012 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2012 | 25 May 2012 | 001-33899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Apr 2012 | 02 Aug 2011 | 000-17204 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jan 2012 | 31 Dec 2011 | 001-33899 |