| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Apr 4, 2022 | Mar 31, 2022 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2022 | Dec 31, 2021 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 1, 2021 | Sep 30, 2021 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 1, 2021 | Jun 30, 2021 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 1, 2021 | Mar 31, 2021 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2021 | Dec 31, 2020 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2020 | Sep 30, 2020 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2020 | Jun 30, 2020 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2020 | Mar 31, 2020 | 001-03525 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 12, 2020 | Dec 31, 2019 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2020 | Dec 31, 2019 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 1, 2019 | Sep 30, 2019 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 2, 2019 | Jul 1, 2019 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 1, 2019 | Jun 30, 2019 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 1, 2019 | Mar 31, 2019 | 001-03525 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 8, 2019 | Dec 31, 2018 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 2, 2019 | Dec 31, 2018 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 1, 2018 | Sep 30, 2018 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 3, 2018 | Jul 2, 2018 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2018 | Jun 30, 2018 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2018 | Mar 31, 2018 | 001-03525 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 9, 2018 | Dec 31, 2017 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 2, 2018 | Dec 31, 2017 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2017 | Sep 30, 2017 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 5, 2017 | Jul 3, 2017 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 5, 2017 | Jun 30, 2017 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2017 | Mar 31, 2017 | 001-03525 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 8, 2017 | Dec 31, 2016 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2017 | Dec 31, 2016 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 3, 2016 | Sep 30, 2016 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 6, 2016 | Jul 1, 2016 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 1, 2016 | Jun 30, 2016 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 1, 2016 | Mar 31, 2016 | 001-03525 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 16, 2016 | Dec 31, 2015 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 4, 2016 | Dec 31, 2015 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 1, 2015 | Sep 30, 2015 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 31, 2015 | Jul 30, 2015 | 001-06747 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 6, 2015 | Jul 1, 2015 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 1, 2015 | Jun 30, 2015 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 1, 2015 | Mar 31, 2015 | 001-03525 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 17, 2015 | Dec 31, 2014 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 5, 2015 | Dec 31, 2014 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 1, 2014 | Sep 30, 2014 | 001-03525 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 3, 2014 | Jul 1, 2014 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2014 | Jun 30, 2014 | 001-03525 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2014 | Mar 31, 2014 | 001-03525 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 14, 2014 | Dec 31, 2013 | 001-06747 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 2, 2014 | Dec 31, 2013 | 001-03525 |