| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 9, 2022 | Jun 9, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 9, 2022 | Jun 9, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 8, 2022 | Jun 6, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 1, 2022 | May 27, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 1, 2022 | May 26, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2022 | May 23, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2022 | May 23, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 20, 2022 | May 19, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2022 | Mar 16, 2022 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 17, 2021 | Dec 14, 2021 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 28, 2020 | Sep 24, 2020 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 19, 2020 | Aug 19, 2020 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 24, 2020 | Jun 23, 2020 | 000-06658 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 24, 2020 | Jun 23, 2020 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 7, 2019 | Oct 3, 2019 | 000-06658 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2017 | Jan 30, 2017 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 7, 2017 | Apr 5, 2017 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 11, 2015 | Jun 8, 2015 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 30, 2014 | Oct 29, 2014 | 000-06658 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 17, 2014 | Mar 13, 2014 | 000-06658 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 4, 2014 | Sep 3, 2014 | 000-06658 |