| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3 | Open Document | Open Filing | Apr 22, 2022 | Apr 22, 2022 | 000-32465 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 21, 2015 | Jul 17, 2015 | 000-32465 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 19, 2014 | Dec 18, 2014 | 000-32465 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2014 | Apr 28, 2014 | 000-32465 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2014 | May 2, 2014 | 000-32465 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2014 | Apr 28, 2014 | 000-32465 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 24, 2014 | Mar 24, 2014 | 000-32465 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2014 | Mar 3, 2014 | 000-32465 |