| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2022 | Mar 20, 2022 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2022 | Mar 15, 2022 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 8, 2021 | Sep 3, 2021 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 8, 2021 | Apr 7, 2021 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 23, 2021 | Mar 20, 2021 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2021 | Mar 12, 2021 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 14, 2020 | Dec 11, 2020 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 24, 2020 | Mar 20, 2020 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2020 | Mar 14, 2020 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 12, 2020 | Mar 10, 2020 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 21, 2019 | Mar 20, 2019 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 18, 2019 | Mar 14, 2019 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 14, 2019 | Mar 12, 2019 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2018 | Mar 29, 2018 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2018 | Mar 20, 2018 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 20, 2018 | Mar 19, 2018 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2018 | Mar 15, 2018 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 15, 2018 | Mar 14, 2018 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 29, 2017 | Mar 28, 2017 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 21, 2017 | Mar 19, 2017 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2017 | Mar 14, 2017 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 21, 2016 | Mar 19, 2016 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2016 | Mar 15, 2016 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 23, 2015 | Mar 19, 2015 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2015 | Mar 15, 2015 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 10, 2014 | Dec 9, 2014 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 21, 2014 | Mar 19, 2014 | 000-51315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2014 | Mar 15, 2014 | 000-51315 |