| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Sep 2021 | 10 Sep 2021 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Sep 2020 | 10 Sep 2020 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Sep 2019 | 10 Sep 2019 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jun 2019 | 14 Jun 2019 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Sep 2018 | 10 Sep 2018 | 000-27512 |
| 4 | Open Document | Open Filing | 4 | 07 Jun 2018 | 06 Jun 2018 | 001-10582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Dec 2017 | 24 Nov 2017 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Sep 2017 | 16 Aug 2017 | 000-27512 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Aug 2017 | 10 Aug 2017 | 001-10582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Mar 2017 | 14 Dec 2016 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Aug 2016 | 24 Aug 2016 | 000-27512 |
| 4 | Open Document | Open Filing | FORM 4 | 05 May 2016 | 04 May 2016 | 001-10582 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Aug 2015 | 12 Aug 2015 | 001-10582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Aug 2015 | 19 Aug 2015 | 000-27512 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Aug 2015 | 05 Aug 2015 | 001-10582 |
| 4 | Open Document | Open Filing | 4 | 11 Feb 2015 | 09 Feb 2015 | 001-10582 |
| 4 | Open Document | Open Filing | 4 | 11 Feb 2015 | 09 Feb 2015 | 001-14279 |
| 3 | Open Document | Open Filing | 3 | 11 Feb 2015 | 09 Feb 2015 | 001-10582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Aug 2014 | 20 Aug 2014 | 000-27512 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jan 2014 | 03 Jan 2014 | 001-14279 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Nov 2013 | 31 Oct 2013 | 001-14279 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Aug 2013 | 21 Aug 2013 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Feb 2013 | 07 Feb 2013 | 000-27512 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jan 2013 | 03 Jan 2013 | 001-14279 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Sep 2012 | 06 Sep 2012 | 001-14279 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Aug 2012 | 15 Aug 2012 | 000-27512 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2012 | 04 May 2012 | 000-27512 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jan 2012 | 04 Jan 2012 | 001-14279 |