| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Sep 2021 | 17 Sep 2021 | 001-11596 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Oct 2016 | 14 Oct 2016 | 000-24249 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jul 2016 | 26 Jul 2016 | 001-11596 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jul 2015 | 22 Jul 2015 | 000-51371 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2015 | 28 Apr 2015 | 000-24249 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2015 | 23 Apr 2015 | 000-51371 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Nov 2014 | 31 Oct 2014 | 000-51371 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Oct 2014 | 17 Oct 2014 | 000-50129 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2014 | 28 Apr 2014 | 000-51371 |