| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 2, 2023 | Aug 2, 2023 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 20, 2022 | May 19, 2022 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 29, 2021 | Jul 8, 2021 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 8, 2021 | Mar 31, 2021 | 000-17204 |
| 144 | Open Document | Open Filing | Jan 7, 2021 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 7, 2021 | Jan 6, 2021 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 11, 2020 | Dec 10, 2020 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 10, 2020 | Sep 9, 2020 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2020 | Aug 19, 2020 | 000-17204 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 9, 2018 | Jul 5, 2018 | 001-33899 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 2, 2018 | Dec 31, 2017 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 16, 2017 | Aug 15, 2017 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2016 | May 16, 2016 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 3, 2015 | Oct 30, 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 11, 2015 | Jun 9, 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2015 | May 29, 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2015 | May 22, 2015 | 001-33899 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 18, 2014 | Jun 13, 2014 | 001-33899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 22, 2014 | Jan 17, 2014 | 000-17204 |