| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 17, 2021 | Aug 26, 2021 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 7, 2021 | Sep 3, 2021 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 31, 2021 | Aug 27, 2021 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 23, 2021 | Apr 22, 2021 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 8, 2020 | Sep 3, 2020 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 23, 2020 | Apr 22, 2020 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 21, 2020 | Apr 17, 2020 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 23, 2020 | Jan 21, 2020 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 24, 2019 | Oct 22, 2019 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 6, 2019 | Sep 4, 2019 | 001-08703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 17, 2019 | Jul 15, 2019 | 001-08703 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | May 9, 2019 | May 9, 2019 | 001-08703 |
| 4 | Open Document | Open Filing | 4 | Nov 21, 2017 | Nov 17, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Nov 1, 2017 | Oct 30, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Oct 18, 2017 | Oct 16, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Sep 7, 2017 | Sep 5, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Aug 16, 2017 | Aug 14, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Jul 6, 2017 | Jul 3, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Jun 6, 2017 | Jun 2, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | May 4, 2017 | May 2, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Apr 25, 2017 | Apr 21, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Apr 5, 2017 | Apr 3, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Mar 3, 2017 | Mar 2, 2017 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Nov 17, 2016 | Nov 2, 2015 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Nov 14, 2016 | Nov 10, 2016 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Nov 3, 2016 | Nov 1, 2016 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Nov 18, 2015 | Nov 16, 2015 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Nov 19, 2014 | Nov 17, 2014 | 000-21272 |
| 4 | Open Document | Open Filing | 4 | Nov 4, 2014 | Oct 31, 2014 | 000-21272 |