| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 13, 2021 | Jul 9, 2021 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 12, 2020 | Nov 9, 2020 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 3, 2020 | Jul 30, 2020 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 14, 2020 | Apr 10, 2020 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 14, 2020 | Jan 10, 2020 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 16, 2019 | Oct 11, 2019 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 5, 2019 | Aug 1, 2019 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 16, 2019 | Jul 12, 2019 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 16, 2019 | Apr 12, 2019 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 15, 2019 | Jan 11, 2019 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 28, 2018 | Nov 27, 2018 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 16, 2018 | Oct 12, 2018 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 6, 2018 | Aug 2, 2018 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 17, 2018 | Jul 13, 2018 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 12, 2018 | Jun 8, 2018 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 3, 2018 | Apr 1, 2018 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 24, 2017 | Nov 21, 2017 | 001-13057 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 16, 2017 | Jun 14, 2017 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 4, 2017 | Apr 1, 2017 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 16, 2016 | Nov 15, 2016 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 14, 2016 | Jun 10, 2016 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2016 | Apr 1, 2016 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 9, 2016 | Feb 5, 2016 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 20, 2015 | Nov 19, 2015 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 27, 2015 | May 22, 2015 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2015 | Apr 1, 2015 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 9, 2015 | Feb 5, 2015 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 6, 2014 | Nov 5, 2014 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2014 | May 13, 2014 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2014 | Apr 1, 2014 | 001-13057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2014 | Feb 6, 2014 | 001-13057 |