| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jun 14, 2021 | Jun 10, 2021 | 000-33169 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Apr 2, 2021 | Mar 31, 2021 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2020 | Mar 31, 2020 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2019 | Mar 31, 2019 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 2, 2019 | Dec 31, 2018 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2018 | Mar 31, 2018 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 30, 2018 | Jan 29, 2018 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2018 | Dec 31, 2017 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 5, 2017 | Jun 1, 2017 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 4, 2017 | Mar 31, 2017 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 24, 2017 | Mar 22, 2017 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 30, 2017 | Jan 29, 2017 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2017 | Dec 31, 2016 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2016 | Jun 1, 2016 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 4, 2016 | Mar 31, 2016 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 28, 2016 | Mar 24, 2016 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2016 | Jan 29, 2016 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2015 | Jun 1, 2015 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2015 | Mar 31, 2015 | 000-33169 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 18, 2015 | Jun 1, 2014 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 12, 2015 | Mar 10, 2015 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2015 | Jan 29, 2015 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2014 | Jun 1, 2014 | 000-33169 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2014 | Jan 29, 2014 | 000-33169 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2014 | Jan 29, 2014 | 000-33169 |