| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 23, 2021 | Jun 21, 2021 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2021 | Jan 4, 2021 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2020 | Jan 2, 2020 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2019 | Jan 2, 2019 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 9, 2018 | May 7, 2018 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2018 | Jan 2, 2018 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2017 | May 1, 2017 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2017 | Jan 3, 2017 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2016 | May 2, 2016 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2016 | Jan 4, 2016 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2015 | May 11, 2015 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2015 | Jan 2, 2015 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2015 | Dec 31, 2014 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2014 | Sep 30, 2014 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2014 | Jun 30, 2014 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2014 | May 12, 2014 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2014 | Mar 31, 2014 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2014 | Jan 2, 2014 | 001-02256 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2014 | Dec 31, 2013 | 001-07657 |