| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2022 | Mar 18, 2022 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 16, 2021 | Jun 15, 2021 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 22, 2021 | Mar 16, 2021 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 17, 2020 | Jun 16, 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 29, 2020 | Apr 27, 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 30, 2020 | Jan 27, 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 9, 2019 | Oct 5, 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 15, 2019 | Apr 17, 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 29, 2019 | Mar 28, 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 29, 2019 | Jan 28, 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 9, 2018 | Oct 5, 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 13, 2018 | Sep 11, 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 1, 2018 | Apr 26, 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 10, 2017 | Oct 5, 2017 | 000-18183 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2017 | Jan 31, 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 30, 2016 | Jun 29, 2016 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 8, 2015 | Oct 6, 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2015 | Jun 30, 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 17, 2015 | Apr 16, 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 15, 2015 | Jan 13, 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 27, 2014 | Oct 23, 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 9, 2014 | Oct 7, 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2014 | Jul 1, 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 19, 2014 | Mar 17, 2014 | 000-18183 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 3, 2014 | Jan 31, 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 16, 2014 | Jan 15, 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2014 | Jan 2, 2014 | 000-18183 |