| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Mar 2022 | 25 Feb 2022 | 000-16255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2021 | 26 Feb 2021 | 000-16255 |
| 4 | Open Document | Open Filing | 17 Mar 2020 | 13 Mar 2020 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2020 | 28 Feb 2020 | 000-16255 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Feb 2020 | 19 Feb 2020 | 001-03932 |
| 4 | Open Document | Open Filing | 13 Feb 2020 | 11 Sep 2019 | 001-03215 | |
| 4 | Open Document | Open Filing | FORM 4 | 18 Apr 2019 | 16 Apr 2019 | 001-03932 |
| 4 | Open Document | Open Filing | 13 Feb 2019 | 12 Feb 2019 | 001-03215 | |
| 4 | Open Document | Open Filing | 17 Dec 2018 | 14 Dec 2018 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Dec 2018 | 04 Dec 2018 | 000-16255 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Dec 2018 | 04 Dec 2018 | 000-16255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Apr 2018 | 17 Apr 2018 | 001-03932 |
| 4 | Open Document | Open Filing | 15 Feb 2018 | 13 Feb 2018 | 001-03215 | |
| 4 | Open Document | Open Filing | 14 Dec 2017 | 12 Dec 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | 14 Sep 2017 | 12 Sep 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2017 | 31 Jul 2017 | 001-03932 |
| 4 | Open Document | Open Filing | 15 Jun 2017 | 13 Jun 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Apr 2017 | 18 Apr 2017 | 001-03932 |
| 4 | Open Document | Open Filing | 16 Mar 2017 | 14 Mar 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | 15 Feb 2017 | 14 Feb 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | 08 Dec 2016 | 06 Dec 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | 09 Sep 2016 | 06 Sep 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | 09 Jun 2016 | 07 Jun 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Apr 2016 | 19 Apr 2016 | 001-03932 |
| 4 | Open Document | Open Filing | 09 Mar 2016 | 08 Mar 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | 10 Feb 2016 | 08 Feb 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | 10 Dec 2015 | 08 Dec 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Nov 2015 | 06 Nov 2015 | 001-03932 |
| 4 | Open Document | Open Filing | 10 Sep 2015 | 08 Sep 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | 11 Jun 2015 | 09 Jun 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2015 | 11 May 2015 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2015 | 04 May 2015 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Apr 2015 | 21 Apr 2015 | 001-03932 |
| 4 | Open Document | Open Filing | 12 Mar 2015 | 10 Mar 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | 11 Feb 2015 | 09 Feb 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | 11 Dec 2014 | 09 Dec 2014 | 001-03215 | |
| 4 | Open Document | Open Filing | 11 Sep 2014 | 09 Sep 2014 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2014 | 10 Jun 2014 | 001-03215 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2014 | 15 Apr 2014 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2014 | 11 Mar 2014 | 001-03215 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2014 | 18 Feb 2014 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2014 | 10 Feb 2014 | 001-03215 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Feb 2014 | 31 Dec 2013 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Apr 2013 | 16 Apr 2013 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2013 | 11 Feb 2013 | 001-03215 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2012 | 03 May 2012 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Apr 2012 | 17 Apr 2012 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2012 | 22 Feb 2012 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2012 | 13 Feb 2012 | 001-03215 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Jan 2012 | 10 Jan 2012 | 001-03822 |