| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 02 Aug 2021 | 27 Jul 2021 | 001-36589 |
| 4 | Open Document | Open Filing | 19 Apr 2021 | 31 Mar 2021 | 001-36589 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2018 | 12 Dec 2018 | 001-36589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2018 | 07 Dec 2017 | 001-36589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2017 | 06 Dec 2017 | 001-36589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Aug 2017 | 12 Jul 2017 | 001-36589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jul 2017 | 30 Jun 2017 | 001-36589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Aug 2016 | 16 Aug 2016 | 001-36589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Sep 2015 | 28 Sep 2015 | 001-36589 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jul 2014 | 18 Jun 2014 | 000-28536 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jul 2014 | 27 Jun 2014 | 000-28536 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jun 2014 | 18 Jun 2014 | 000-28536 |