| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2022 | Jan 1, 2022 | 000-50254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 3, 2017 | Jul 1, 2017 | 000-50254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2017 | Apr 1, 2017 | 000-50254 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 10, 2014 | Apr 8, 2014 | 000-50254 |