| 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 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2020 | Jan 3, 2020 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2019 | Jan 3, 2019 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2018 | Jan 3, 2018 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2017 | Jan 3, 2017 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 21, 2016 | Dec 21, 2016 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2016 | Jan 3, 2016 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 9, 2015 | Dec 8, 2015 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2015 | Jan 3, 2015 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 5, 2014 | Aug 5, 2014 | 001-11929 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 7, 2014 | Jan 3, 2014 | 001-11929 |