| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 6, 2021 | Jul 1, 2021 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2021 | Apr 1, 2021 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2021 | Jan 4, 2021 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 5, 2020 | Oct 1, 2020 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 8, 2020 | Jul 7, 2020 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 6, 2020 | Jul 1, 2020 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2020 | Apr 1, 2020 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2020 | Mar 9, 2020 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2020 | Jan 2, 2020 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2019 | Oct 1, 2019 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 11, 2019 | Sep 10, 2019 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 3, 2019 | Jul 1, 2019 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2019 | Apr 1, 2019 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 13, 2019 | Mar 11, 2019 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 3, 2018 | Oct 1, 2018 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 4, 2017 | Oct 2, 2017 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 13, 2016 | Dec 6, 2016 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 4, 2016 | Oct 3, 2016 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 1, 2015 | Oct 1, 2015 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 16, 2015 | Jul 15, 2015 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 10, 2015 | Jul 8, 2015 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2014 | Oct 1, 2014 | 001-12597 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 11, 2014 | Sep 11, 2014 | 001-12597 |