| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Aug 2023 | 14 Aug 2023 | 000-12255 |
| 144 | Open Document | Open Filing | 14 Aug 2023 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Jan 2023 | 27 Jan 2023 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2022 | 13 May 2022 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jan 2022 | 19 Jan 2022 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jan 2022 | 15 Jan 2022 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2021 | 15 Nov 2021 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Nov 2021 | 08 Nov 2021 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2021 | 28 Feb 2021 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2020 | 28 Feb 2020 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Dec 2019 | 11 Dec 2019 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2019 | 11 Feb 2019 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2019 | 08 Jan 2019 | 001-00087 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2018 | 01 May 2018 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2018 | 08 Jan 2018 | 001-00087 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2017 | 02 May 2017 | 000-12255 |
| 4 | Open Document | Open Filing | 4 | 01 Feb 2017 | 31 Jan 2017 | 000-54085 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2017 | 08 Jan 2017 | 001-00087 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2017 | 01 Jan 2017 | 001-00087 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Apr 2016 | 26 Apr 2016 | 000-12255 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Mar 2016 | 16 Mar 2016 | 000-54085 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jan 2016 | 08 Jan 2016 | 001-00087 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2016 | 01 Jan 2016 | 001-00087 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Aug 2015 | 11 Aug 2015 | 001-00087 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 May 2015 | 11 May 2015 | 000-54085 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2015 | 06 May 2015 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2015 | 01 Jan 2015 | 001-00087 |
| 4 | Open Document | Open Filing | 4 | 30 Sep 2014 | 23 Sep 2014 | 000-54085 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2014 | 30 Apr 2014 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2014 | 25 Feb 2014 | 000-12255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jan 2014 | 31 Dec 2013 | 001-00087 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Sep 2013 | 03 Sep 2013 | 001-00087 |
| 4 | Open Document | Open Filing | 4 | 31 May 2013 | 29 May 2013 | 000-54085 |
| 3 | Open Document | Open Filing | 3 | 23 May 2013 | 14 May 2013 | 000-54085 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2013 | 01 May 2013 | 000-12255 |
| 4 | Open Document | Open Filing | 03 May 2012 | 02 May 2012 | 000-12255 |