| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jul 23, 2021 | Jul 22, 2021 | 001-32954 | 
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 6, 2015 | May 4, 2015 | 001-32954 | 
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | May 6, 2015 | May 4, 2015 | 001-32954 |