| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 19, 2022 | Apr 18, 2022 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 7, 2021 | May 3, 2021 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 3, 2021 | Jan 29, 2021 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2020 | Nov 13, 2020 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 20, 2020 | Apr 17, 2020 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 20, 2020 | Mar 19, 2020 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2019 | May 9, 2019 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 25, 2019 | Mar 22, 2019 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2019 | Mar 20, 2019 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 5, 2018 | Feb 5, 2018 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2018 | Jan 19, 2018 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 22, 2017 | Feb 21, 2017 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2017 | Feb 20, 2017 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2016 | Feb 8, 2016 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 22, 2015 | Apr 17, 2015 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 28, 2014 | Aug 26, 2014 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 28, 2014 | Jul 25, 2014 | 000-54416 |