| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 03 Jun 2022 | 01 Jun 2022 | 001-14120 | |
| 4 | Open Document | Open Filing | 08 Apr 2022 | 07 Apr 2022 | 001-14120 | |
| 4 | Open Document | Open Filing | 20 Dec 2021 | 17 Dec 2021 | 001-14120 | |
| 4 | Open Document | Open Filing | 12 Oct 2021 | 08 Oct 2021 | 001-14120 | |
| 4 | Open Document | Open Filing | 12 Jul 2021 | 09 Jul 2021 | 001-14120 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Apr 2021 | 09 Apr 2021 | 001-14120 |
| 4 | Open Document | Open Filing | 22 Mar 2021 | 19 Mar 2021 | 001-14120 | |
| 4 | Open Document | Open Filing | FORM 4 | 21 Apr 2020 | 17 Apr 2020 | 001-14120 |
| 3 | Open Document | Open Filing | FORM 3 | 31 Jan 2020 | 23 Jan 2020 | 001-14120 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Sep 2016 | 06 Sep 2016 | 001-37764 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2016 | 01 May 2016 | 000-53413 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2016 | 01 Mar 2016 | 000-53413 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2015 | 04 May 2015 | 000-53413 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2015 | 01 Mar 2015 | 000-53413 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2014 | 01 May 2014 | 000-53413 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2014 | 01 Apr 2014 | 000-53413 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Mar 2014 | 18 Mar 2014 | 000-53413 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Jul 2013 | 12 Jul 2013 | 000-31254 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 04 Jun 2013 | 22 May 2013 | 000-31254 |