| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2021 | 01 Jul 2021 | 000-19311 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2020 | 03 Jun 2020 | 000-19311 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jun 2019 | 19 Jun 2019 | 000-19311 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jun 2018 | 12 Jun 2018 | 000-19311 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2017 | 07 Jun 2017 | 000-19311 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Mar 2017 | 08 Mar 2017 | 001-36214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Mar 2017 | 03 Mar 2017 | 001-36214 |
| 4 | Open Document | Open Filing | FORM 4 - | 06 Mar 2017 | 03 Mar 2017 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2017 | 09 Feb 2017 | 001-36214 |
| 5 | Open Document | Open Filing | FORM 5 - | 03 Feb 2017 | 31 Dec 2016 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2017 | 03 Jan 2017 | 001-36214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jul 2016 | 21 Jul 2016 | 001-36214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jul 2016 | 12 Jul 2016 | 001-36214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jul 2016 | 08 Jul 2016 | 001-36214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2016 | 08 Jun 2016 | 000-19311 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 May 2016 | 03 May 2016 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2016 | 02 Mar 2016 | 001-36214 |
| 5 | Open Document | Open Filing | FORM 5 - | 16 Feb 2016 | 31 Dec 2015 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2016 | 01 Jan 2016 | 001-36214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2015 | 10 Jun 2015 | 000-19311 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 Jun 2015 | 03 Jun 2015 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2015 | 01 Jun 2015 | 001-36214 |
| 4 | Open Document | Open Filing | FORM 4 - | 20 May 2015 | 19 May 2015 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2015 | 15 May 2015 | 001-36214 |
| 5 | Open Document | Open Filing | FORM 5 - | 13 Feb 2015 | 31 Dec 2014 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2015 | 01 Jan 2015 | 001-36214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jun 2014 | 12 Jun 2014 | 000-19311 |
| 4 | Open Document | Open Filing | FORM 4 - | 06 Jun 2014 | 04 Jun 2014 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Mar 2014 | 10 Mar 2014 | 000-19311 |
| 5 | Open Document | Open Filing | FORM 5 - | 13 Feb 2014 | 31 Dec 2013 | 000-20971 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2014 | 01 Jan 2014 | 001-36214 |