| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2021 | 01 May 2021 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2020 | 01 Apr 2020 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Sep 2019 | 01 Sep 2019 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jan 2018 | 01 Jan 2018 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Aug 2017 | 01 Aug 2017 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2017 | 01 Apr 2017 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2014 | 01 Feb 2014 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Nov 2013 | 01 Sep 2013 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jul 2013 | 01 Jul 2013 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jan 2013 | 01 Jan 2013 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Oct 2012 | 01 Oct 2012 | 000-53036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jul 2012 | 01 Jul 2012 | 000-53036 |