| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2021 | Jun 1, 2021 | 001-03548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2020 | Jun 1, 2020 | 001-03548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 3, 2019 | Oct 1, 2019 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2019 | Jun 3, 2019 | 001-03548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2019 | May 21, 2019 | 001-03548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 28, 2018 | Dec 27, 2018 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 3, 2018 | Oct 1, 2018 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2018 | Jun 1, 2018 | 001-03548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 4, 2017 | Oct 2, 2017 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 1, 2017 | Jun 1, 2017 | 001-03548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 5, 2016 | Oct 3, 2016 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 27, 2016 | Jun 23, 2016 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2016 | Jun 1, 2016 | 001-03548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 5, 2015 | Oct 1, 2015 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2015 | Jun 1, 2015 | 001-03548 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 6, 2014 | Oct 1, 2014 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 3, 2014 | Oct 1, 2014 | 001-05111 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2014 | Jun 2, 2014 | 001-03548 |