| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jul 21, 2022 | Jul 21, 2022 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2022 | Jan 4, 2022 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2022 | Dec 31, 2021 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 5, 2021 | Oct 1, 2021 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2021 | Dec 31, 2020 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 2, 2020 | Oct 1, 2020 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2020 | Jan 2, 2020 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 5, 2019 | Oct 1, 2019 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 24, 2019 | Jan 17, 2019 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 3, 2018 | Oct 1, 2018 | 000-33001 |
| 3 | Open Document | Open Filing | FORM 3 | Oct 3, 2018 | Oct 1, 2018 | 000-33001 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 4, 2018 | Jul 31, 2018 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 31, 2018 | Aug 29, 2018 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2018 | Aug 23, 2018 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2018 | Jan 31, 2018 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2018 | Mar 1, 2018 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 5, 2017 | Dec 1, 2017 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 6, 2017 | Jul 31, 2017 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 25, 2017 | Aug 23, 2017 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2017 | Jan 31, 2017 | 000-25711 |
| 3/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 2016 | Jun 1, 2016 | 000-25711 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2016 | Jun 1, 2016 | 000-25711 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2016 | Jun 1, 2016 | 000-25711 |