| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jun 28, 2023 | Jun 15, 2023 | 001-40682 |
| 4 | Open Document | Open Filing | 4 | May 14, 2018 | May 10, 2018 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 15, 2017 | May 12, 2017 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2017 | May 10, 2017 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 24, 2017 | Apr 21, 2017 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2016 | May 11, 2016 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2016 | May 10, 2016 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 22, 2016 | Apr 21, 2016 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2015 | May 11, 2015 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2015 | May 10, 2015 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 17, 2014 | Nov 13, 2014 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2014 | May 12, 2014 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2014 | May 10, 2014 | 000-20214 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2014 | Apr 17, 2014 | 000-20214 |