| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 3, 2021 | Aug 18, 2021 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 19, 2021 | Feb 17, 2021 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2021 | Feb 2, 2021 | 001-10898 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2020 | Feb 4, 2020 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2020 | Feb 19, 2020 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 6, 2020 | Feb 4, 2020 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 22, 2019 | Feb 20, 2019 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2019 | Feb 5, 2019 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 23, 2018 | Feb 21, 2018 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 8, 2018 | Feb 6, 2018 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 29, 2018 | Jan 26, 2018 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 11, 2017 | Aug 10, 2017 | 001-10898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2017 | Feb 22, 2017 | 001-10898 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 13, 2017 | Feb 9, 2017 | 001-10898 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 14, 2016 | Nov 3, 2016 | 001-10898 |