| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2023 | May 17, 2023 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 10, 2022 | Jun 8, 2022 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2022 | May 11, 2022 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2021 | May 11, 2021 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 11, 2020 | Jun 10, 2020 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 21, 2020 | May 20, 2020 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 15, 2019 | Aug 13, 2019 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2019 | May 20, 2019 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 15, 2018 | Aug 13, 2018 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 16, 2017 | Aug 14, 2017 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 17, 2016 | Aug 15, 2016 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2016 | Jan 4, 2016 | 001-16503 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2016 | Jan 4, 2016 | 001-16503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2016 | Jan 4, 2016 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 31, 2015 | Dec 30, 2015 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 17, 2015 | Dec 15, 2015 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 19, 2015 | Oct 15, 2015 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 17, 2015 | Jul 15, 2015 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2015 | Jul 1, 2015 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 17, 2015 | Apr 15, 2015 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 20, 2015 | Jan 15, 2015 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 17, 2014 | Oct 15, 2014 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 17, 2014 | Jul 15, 2014 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 3, 2014 | Jul 1, 2014 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 17, 2014 | Apr 15, 2014 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 7, 2014 | Feb 11, 2014 | 001-34594 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 27, 2014 | Jan 15, 2014 | 001-34594 |