| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 22, 2021 | Dec 22, 2021 | 001-11929 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 5, 2021 | Jan 3, 2021 | 001-11929 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Jan 9, 2020 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2020 | Jan 3, 2020 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 28, 2019 | Mar 28, 2019 | 001-16791 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Jan 24, 2019 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2019 | Jan 3, 2019 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2019 | Jan 3, 2019 | 001-16791 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Jan 12, 2018 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2018 | Jan 3, 2018 | 001-16791 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2018 | Jan 3, 2018 | 001-11929 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Jan 23, 2017 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2017 | Jan 3, 2017 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2017 | Jan 3, 2017 | 001-16791 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 2, 2016 | Mar 2, 2016 | 001-34872 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Jan 21, 2016 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2016 | Jan 3, 2016 | 001-16791 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2016 | Jan 3, 2016 | 001-11929 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 29, 2015 | May 28, 2015 | 001-34872 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Jan 13, 2015 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2015 | Jan 3, 2015 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2015 | Jan 3, 2015 | 001-16791 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 23, 2014 | Apr 21, 2014 | 001-34872 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 6, 2014 | ||
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 6, 2014 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 7, 2014 | Jan 3, 2014 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 7, 2014 | Jan 3, 2014 | 001-16791 |