| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 2021 | Jun 5, 2021 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2021 | Jun 3, 2021 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2021 | May 5, 2021 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2021 | Mar 5, 2021 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2021 | Mar 2, 2021 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 8, 2020 | Dec 5, 2020 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 8, 2020 | Sep 5, 2020 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 9, 2020 | Jun 5, 2020 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2020 | Mar 5, 2020 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2020 | Mar 3, 2020 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2020 | Feb 28, 2020 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 9, 2019 | Dec 6, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 27, 2019 | Nov 27, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 10, 2019 | Sep 6, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 29, 2019 | Aug 28, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 10, 2019 | Jun 6, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 30, 2019 | May 28, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2019 | Mar 5, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2019 | Feb 28, 2019 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 4, 2018 | Dec 1, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 30, 2018 | Nov 28, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 4, 2018 | Sep 1, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 30, 2018 | Aug 28, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2018 | Jun 1, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 30, 2018 | May 28, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 8, 2018 | Feb 6, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2018 | Feb 28, 2018 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 5, 2017 | Dec 1, 2017 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 5, 2017 | Sep 1, 2017 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 5, 2017 | Jun 1, 2017 | 001-13883 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2017 | Mar 1, 2017 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2017 | Mar 1, 2017 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2017 | Feb 28, 2017 | 001-13883 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2016 | Mar 1, 2016 | 001-13883 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2016 | Mar 1, 2016 | 001-13883 |