| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3 | Open Document | Open Filing | FORM 3 | 05 Jan 2024 | 01 Jan 2024 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Dec 2021 | 07 Dec 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Apr 2021 | 23 Apr 2021 | 000-12247 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jul 2017 | 29 Jun 2017 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jun 2017 | 01 Sep 2016 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Sep 2016 | 10 Mar 2016 | 000-12247 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jan 2016 | 31 Dec 2015 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 May 2015 | 12 Mar 2015 | 000-12247 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Feb 2015 | 31 Dec 2014 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2014 | 12 May 2014 | 000-12247 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jan 2014 | 31 Dec 2013 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Apr 2013 | 14 Mar 2013 | 000-12247 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Feb 2013 | 31 Dec 2012 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Aug 2012 | 15 Mar 2012 | 000-12247 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jan 2012 | 31 Dec 2011 | 333-17203 |