| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 31, 2021 | Aug 30, 2021 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 30, 2021 | Aug 26, 2021 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 27, 2021 | Aug 25, 2021 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2021 | Aug 22, 2021 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2021 | May 9, 2021 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2021 | Feb 10, 2021 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 31, 2020 | Aug 28, 2020 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 28, 2020 | Aug 26, 2020 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 25, 2020 | Aug 22, 2020 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2020 | May 9, 2020 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2019 | Nov 11, 2019 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 30, 2019 | Aug 28, 2019 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 26, 2019 | Aug 22, 2019 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2019 | May 10, 2019 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 9, 2018 | Nov 8, 2018 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2018 | Aug 22, 2018 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 9, 2018 | May 9, 2018 | 001-13988 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 9, 2017 | Nov 7, 2017 | 001-13988 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 25, 2017 | Jan 12, 2017 | 001-13988 |