| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 9, 2022 | Aug 8, 2022 | 001-35853 | 
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 9, 2022 | Aug 8, 2022 | 001-35853 | 
| 4 | Open Document | Open Filing | Dec 21, 2018 | Dec 19, 2018 | 001-38185 | |
| 4 | Open Document | Open Filing | Jul 20, 2018 | Jul 18, 2018 | 001-38185 | |
| 3 | Open Document | Open Filing | Apr 14, 2017 | Apr 10, 2017 | 000-21615 |