| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3 | Open Document | Open Filing | FORM 3 | 21 Jun 2021 | 10 Jun 2021 | 001-36042 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jun 2017 | 16 Jun 2017 | 000-24469 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Feb 2016 | 29 Jan 2016 | 000-24469 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Jan 2015 | 16 Jan 2015 | 000-24469 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Dec 2014 | 05 Dec 2014 | 000-24469 |
| 3 | Open Document | Open Filing | FORM 3 | 09 Dec 2014 | 05 Dec 2014 | 000-24469 |