| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2023 | 14 Mar 2023 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2018 | 09 May 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2016 | 19 May 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Apr 2016 | 25 Apr 2016 | 000-30713 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Apr 2016 | 21 Apr 2016 | 000-30713 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2016 | 14 Mar 2016 | 000-30713 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Aug 2015 | 10 Aug 2015 | 000-26497 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 May 2015 | 26 May 2015 | 000-26658 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2015 | 19 May 2015 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Apr 2015 | 27 Apr 2015 | 000-30713 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Apr 2015 | 23 Apr 2015 | 000-30713 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Apr 2015 | 07 Apr 2015 | 000-26658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jan 2015 | 02 Jan 2015 | 000-26658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Oct 2014 | 01 Oct 2014 | 000-26658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jul 2014 | 01 Jul 2014 | 000-26658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 May 2014 | 09 May 2014 | 000-26658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2014 | 24 Apr 2014 | 000-30713 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Apr 2014 | 01 Apr 2014 | 000-26658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Mar 2014 | 04 Mar 2014 | 000-26658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jan 2014 | 02 Jan 2014 | 000-26658 |