| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 31, 2021 | Aug 30, 2021 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2021 | May 10, 2021 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 23, 2021 | Mar 22, 2021 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 12, 2021 | Mar 11, 2021 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 19, 2021 | Feb 18, 2021 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 16, 2021 | Feb 12, 2021 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 13, 2021 | Jan 12, 2021 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 10, 2020 | Nov 9, 2020 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 28, 2020 | Aug 27, 2020 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 26, 2020 | Aug 25, 2020 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2020 | Jun 3, 2020 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2020 | May 8, 2020 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 23, 2020 | Mar 20, 2020 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2020 | Feb 13, 2020 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 8, 2019 | Nov 7, 2019 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 5, 2019 | Nov 4, 2019 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 21, 2019 | Jun 20, 2019 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2019 | May 8, 2019 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 7, 2019 | May 6, 2019 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 29, 2019 | Mar 28, 2019 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2018 | May 8, 2018 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 8, 2018 | May 4, 2018 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 12, 2018 | Feb 9, 2018 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 2, 2018 | Dec 31, 2017 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 5, 2017 | Jun 2, 2017 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2017 | May 9, 2017 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2017 | May 8, 2017 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 8, 2017 | May 4, 2017 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 30, 2017 | Mar 29, 2017 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 13, 2017 | Feb 10, 2017 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2017 | Dec 31, 2016 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2016 | May 9, 2016 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2016 | May 6, 2016 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2016 | May 4, 2016 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2016 | May 2, 2016 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2016 | Feb 3, 2016 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 31, 2015 | Dec 31, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 15, 2015 | May 14, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2015 | May 13, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2015 | May 8, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 7, 2015 | May 6, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2015 | May 4, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2015 | May 1, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 5, 2015 | Feb 4, 2015 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 31, 2014 | Dec 31, 2014 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2014 | May 8, 2014 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2014 | May 5, 2014 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2014 | May 1, 2014 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2014 | Mar 4, 2014 | 001-12981 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 6, 2014 | Feb 5, 2014 | 001-12981 |