| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2024 | Dec 19, 2023 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 21, 2023 | Sep 19, 2023 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 25, 2023 | Aug 25, 2023 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 6, 2023 | Jun 16, 2023 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2023 | May 19, 2023 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2023 | Mar 17, 2023 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 23, 2023 | Feb 23, 2023 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2023 | Dec 20, 2022 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 28, 2022 | Sep 16, 2022 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2022 | Aug 24, 2022 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 11, 2022 | Jun 17, 2022 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2022 | May 24, 2022 | 000-12820 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 30, 2022 | Mar 18, 2022 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 15, 2022 | Feb 15, 2022 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 10, 2022 | Dec 17, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 30, 2021 | Nov 29, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 6, 2021 | Sep 17, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 18, 2021 | Aug 17, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 14, 2021 | Jun 18, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2021 | May 24, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 26, 2021 | Mar 23, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2021 | Feb 22, 2021 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 8, 2021 | Dec 23, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2020 | Nov 17, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2020 | Sep 22, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2020 | Aug 21, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 5, 2020 | Jun 19, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 28, 2020 | May 28, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 31, 2020 | Mar 20, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2020 | Feb 27, 2020 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 15, 2020 | Mar 15, 2019 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 26, 2019 | Nov 25, 2019 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 19, 2019 | Mar 15, 2019 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 29, 2019 | May 24, 2019 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2019 | Feb 25, 2019 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2019 | Mar 16, 2018 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 26, 2018 | Nov 21, 2018 | 000-12820 |
| 4 | Open Document | Open Filing | Nov 20, 2018 | Nov 16, 2018 | 000-51251 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 22, 2018 | Mar 16, 2018 | 000-12820 |
| 4 | Open Document | Open Filing | Jun 8, 2018 | Jun 4, 2018 | 000-51251 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 12, 2018 | Apr 12, 2018 | 001-35930 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 15, 2018 | Feb 13, 2018 | 000-12820 |
| 5 | Open Document | Open Filing | Feb 14, 2018 | Dec 31, 2017 | 000-51251 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2018 | Mar 17, 2017 | 000-12820 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 18, 2017 | Dec 15, 2017 | 001-35930 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 13, 2017 | Dec 11, 2017 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 30, 2017 | Nov 29, 2017 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 21, 2017 | Aug 17, 2017 | 000-12820 |
| 4 | Open Document | Open Filing | Jun 9, 2017 | Jun 7, 2017 | 000-51251 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 30, 2017 | May 25, 2017 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2017 | May 22, 2017 | 000-12820 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 15, 2017 | May 11, 2017 | 001-35930 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 28, 2017 | Mar 2, 2017 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 28, 2017 | Sep 6, 2012 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 28, 2017 | Dec 16, 2016 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 28, 2017 | Mar 23, 2016 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2017 | Mar 3, 2017 | 000-12820 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 7, 2016 | Dec 5, 2016 | 001-35930 |
| 4 | Open Document | Open Filing | Jun 10, 2016 | Jun 8, 2016 | 000-51251 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 23, 2016 | May 19, 2016 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 31, 2016 | Mar 23, 2016 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 30, 2016 | Mar 23, 2016 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 29, 2016 | Feb 25, 2016 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 26, 2016 | Jun 24, 2015 | 000-12820 |
| 4/A | Open Document | Open Filing | AMENDED OWNERSHIP DOCUMENT | Dec 21, 2015 | Dec 10, 2015 | 001-35930 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 14, 2015 | Dec 11, 2014 | 001-35930 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 10, 2015 | Nov 9, 2015 | 001-34964 |
| 4 | Open Document | Open Filing | Jun 5, 2015 | Jun 3, 2015 | 000-51251 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2015 | May 15, 2015 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2015 | May 11, 2015 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 31, 2015 | Mar 25, 2015 | 000-12820 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2015 | Mar 2, 2015 | 001-34964 |
| 5 | Open Document | Open Filing | Feb 27, 2015 | Dec 31, 2014 | 000-51251 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 26, 2015 | Mar 21, 2014 | 000-12820 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 15, 2014 | Dec 11, 2014 | 001-35930 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 20, 2014 | Oct 16, 2014 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 29, 2014 | Jul 25, 2014 | 001-34964 |
| 4 | Open Document | Open Filing | Jun 6, 2014 | Jun 4, 2014 | 000-51251 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2014 | Apr 17, 2014 | 001-34964 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 6, 2014 | Mar 4, 2014 | 001-35930 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2014 | Feb 6, 2014 | 001-34964 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 14, 2014 | Jun 21, 2013 | 000-12820 |