| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2023 | May 21, 2023 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2023 | Apr 28, 2023 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 23, 2022 | May 21, 2022 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 2, 2022 | Apr 30, 2022 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2021 | Apr 30, 2021 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 27, 2021 | Apr 24, 2021 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 27, 2020 | Apr 24, 2020 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 29, 2019 | Apr 26, 2019 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 27, 2018 | Apr 27, 2018 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 1, 2017 | Apr 28, 2017 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 2, 2016 | Apr 29, 2016 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 24, 2015 | Apr 24, 2015 | 000-30111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 29, 2014 | Apr 25, 2014 | 000-30111 |