| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2022 | Feb 25, 2022 | 000-16255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2021 | Feb 26, 2021 | 000-16255 |
| 4 | Open Document | Open Filing | Mar 17, 2020 | Mar 13, 2020 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2020 | Feb 28, 2020 | 000-16255 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 20, 2020 | Feb 19, 2020 | 001-03932 |
| 4 | Open Document | Open Filing | Feb 13, 2020 | Sep 11, 2019 | 001-03215 | |
| 4 | Open Document | Open Filing | FORM 4 | Apr 18, 2019 | Apr 16, 2019 | 001-03932 |
| 4 | Open Document | Open Filing | Feb 13, 2019 | Feb 12, 2019 | 001-03215 | |
| 4 | Open Document | Open Filing | Dec 17, 2018 | Dec 14, 2018 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 6, 2018 | Dec 4, 2018 | 000-16255 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 4, 2018 | Dec 4, 2018 | 000-16255 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 19, 2018 | Apr 17, 2018 | 001-03932 |
| 4 | Open Document | Open Filing | Feb 15, 2018 | Feb 13, 2018 | 001-03215 | |
| 4 | Open Document | Open Filing | Dec 14, 2017 | Dec 12, 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | Sep 14, 2017 | Sep 12, 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2017 | Jul 31, 2017 | 001-03932 |
| 4 | Open Document | Open Filing | Jun 15, 2017 | Jun 13, 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 20, 2017 | Apr 18, 2017 | 001-03932 |
| 4 | Open Document | Open Filing | Mar 16, 2017 | Mar 14, 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | Feb 15, 2017 | Feb 14, 2017 | 001-03215 | |
| 4 | Open Document | Open Filing | Dec 8, 2016 | Dec 6, 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | Sep 9, 2016 | Sep 6, 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | Jun 9, 2016 | Jun 7, 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2016 | Apr 19, 2016 | 001-03932 |
| 4 | Open Document | Open Filing | Mar 9, 2016 | Mar 8, 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | Feb 10, 2016 | Feb 8, 2016 | 001-03215 | |
| 4 | Open Document | Open Filing | Dec 10, 2015 | Dec 8, 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 10, 2015 | Nov 6, 2015 | 001-03932 |
| 4 | Open Document | Open Filing | Sep 10, 2015 | Sep 8, 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | Jun 11, 2015 | Jun 9, 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2015 | May 11, 2015 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2015 | May 4, 2015 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 23, 2015 | Apr 21, 2015 | 001-03932 |
| 4 | Open Document | Open Filing | Mar 12, 2015 | Mar 10, 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | Feb 11, 2015 | Feb 9, 2015 | 001-03215 | |
| 4 | Open Document | Open Filing | Dec 11, 2014 | Dec 9, 2014 | 001-03215 | |
| 4 | Open Document | Open Filing | Sep 11, 2014 | Sep 9, 2014 | 001-03215 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 12, 2014 | Jun 10, 2014 | 001-03215 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 17, 2014 | Apr 15, 2014 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 13, 2014 | Mar 11, 2014 | 001-03215 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 20, 2014 | Feb 18, 2014 | 001-03932 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 12, 2014 | Feb 10, 2014 | 001-03215 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2014 | Dec 31, 2013 | 001-03932 |