| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Aug 2021 | 03 Aug 2021 | 000-18548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2021 | 27 Apr 2021 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Aug 2020 | 04 Aug 2020 | 000-18548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2020 | 06 May 2020 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2020 | 11 Feb 2020 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Aug 2019 | 07 Aug 2019 | 000-18548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2019 | 31 May 2019 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2018 | 31 Jul 2018 | 000-18548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2018 | 01 May 2018 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Aug 2017 | 08 Aug 2017 | 000-18548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2017 | 02 May 2017 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Aug 2016 | 09 Aug 2016 | 000-18548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jun 2016 | 10 Jun 2016 | 000-18548 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2016 | 06 May 2016 | 000-18548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2016 | 06 May 2016 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2016 | 16 Feb 2016 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2015 | 05 May 2015 | 001-36102 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Nov 2014 | 17 Nov 2014 | 001-36102 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Mar 2014 | 07 Mar 2014 | 001-36102 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 28 Feb 2014 | 28 Feb 2014 | 001-36102 |