| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 28, 2021 | May 15, 2021 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2020 | Jun 2, 2020 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2020 | May 20, 2020 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 14, 2019 | Jun 12, 2019 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 5, 2019 | Jun 3, 2019 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2019 | May 20, 2019 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2019 | May 14, 2019 | 001-33459 |
| 144 | Open Document | Open Filing | 144 | May 15, 2019 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 13, 2018 | Jun 12, 2018 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 2018 | Jun 5, 2018 | 001-33459 |
| 144 | Open Document | Open Filing | 144 | May 30, 2018 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 15, 2017 | Jun 14, 2017 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 9, 2017 | Jun 7, 2017 | 001-33459 |
| 144 | Open Document | Open Filing | 144 | Jun 5, 2017 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 1, 2017 | May 30, 2017 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 9, 2016 | Jun 8, 2016 | 001-33459 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2015 | Jun 3, 2015 | 001-33459 |
| 3/A | Open Document | Open Filing | FORM 3/A SUBMISSION | Feb 27, 2015 | Feb 2, 2015 | 001-33459 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 12, 2015 | Feb 2, 2015 | 001-33459 |