| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Aug 2021 | 05 Aug 2021 | 001-33500 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Aug 2020 | 06 Aug 2020 | 001-33500 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Aug 2019 | 08 Aug 2019 | 001-33500 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Aug 2018 | 09 Aug 2018 | 001-33500 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2017 | 10 Aug 2017 | 001-33500 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Aug 2016 | 11 Aug 2016 | 001-33500 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Aug 2015 | 07 Aug 2015 | 001-33500 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Aug 2014 | 07 Aug 2014 | 001-33500 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Aug 2014 | 01 Aug 2014 | 001-33500 |