| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2022 | Jun 1, 2022 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2021 | Jun 1, 2021 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2021 | May 1, 2021 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2020 | Jun 1, 2020 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2020 | May 1, 2020 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2019 | Jun 3, 2019 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 2, 2019 | May 1, 2019 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 5, 2018 | Jun 1, 2018 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2018 | May 1, 2018 | 001-34036 |
| 4 | Open Document | Open Filing | FORM 4 | May 3, 2018 | May 1, 2018 | 001-06003 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 27, 2017 | Nov 24, 2017 | 001-06003 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 15, 2017 | Nov 14, 2017 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2017 | Jun 1, 2017 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 2, 2017 | May 1, 2017 | 001-34036 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 25, 2017 | Apr 21, 2017 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2016 | Jun 1, 2016 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2016 | May 1, 2016 | 001-34036 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 27, 2016 | Apr 26, 2016 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2015 | Jun 1, 2015 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2015 | May 1, 2015 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 29, 2015 | Apr 28, 2015 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 23, 2014 | Jul 22, 2014 | 001-06263 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2014 | Jun 2, 2014 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2014 | Jun 2, 2014 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 2, 2014 | May 1, 2014 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 23, 2014 | Apr 22, 2014 | 001-06003 |