| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Aug 31, 2022 | Aug 29, 2022 | 001-12696 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 27, 2021 | Jul 26, 2021 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 29, 2020 | Jul 27, 2020 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 26, 2020 | Feb 25, 2020 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2019 | Jun 28, 2019 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 22, 2019 | Feb 21, 2019 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 6, 2018 | Aug 2, 2018 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2018 | May 9, 2018 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 7, 2017 | Aug 3, 2017 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2017 | May 15, 2017 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2017 | May 15, 2017 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 8, 2017 | May 5, 2017 | 000-55360 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 8, 2016 | Aug 4, 2016 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 6, 2016 | Jun 3, 2016 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 3, 2015 | Jul 30, 2015 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2015 | Mar 6, 2015 | 000-55360 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2015 | Mar 5, 2015 | 001-12696 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2015 | Feb 2, 2015 | 000-55360 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 5, 2014 | Aug 1, 2014 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2014 | May 13, 2014 | 001-12696 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 5, 2014 | Feb 4, 2014 | 001-12696 |