| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jan 25, 2022 | Jan 19, 2022 | 001-38286 | |
| 3 | Open Document | Open Filing | May 27, 2021 | May 15, 2021 | 001-38286 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2018 | Feb 26, 2018 | 001-15697 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2017 | Feb 23, 2017 | 001-15697 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 3, 2016 | Apr 28, 2016 | 001-15697 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2016 | Feb 16, 2016 | 001-15697 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2015 | Mar 5, 2015 | 001-15697 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 18, 2014 | Jun 19, 2012 | 001-15697 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2014 | Feb 25, 2013 | 001-15697 |