| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2023 | Mar 1, 2023 | 001-04121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 27, 2022 | Apr 25, 2022 | 001-11239 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2022 | Mar 2, 2022 | 001-04121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 30, 2021 | Apr 28, 2021 | 001-11239 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2021 | Mar 3, 2021 | 001-04121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 5, 2020 | May 1, 2020 | 001-11239 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2020 | Mar 4, 2020 | 001-04121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 3, 2019 | May 1, 2019 | 001-11239 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2019 | Mar 6, 2019 | 001-04121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 4, 2018 | May 2, 2018 | 001-11239 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 8, 2018 | Mar 7, 2018 | 001-04121 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2018 | Jan 1, 2018 | 001-04121 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2018 | Jan 1, 2018 | 001-04121 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 18, 2017 | Dec 15, 2017 | 000-27261 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 2017 | Jun 7, 2017 | 000-27261 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 5, 2017 | May 3, 2017 | 001-11239 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2016 | May 12, 2016 | 000-27261 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 6, 2016 | May 4, 2016 | 001-11239 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | May 6, 2016 | Apr 28, 2016 | 001-11239 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 18, 2015 | May 15, 2015 | 000-27261 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2015 | Mar 4, 2015 | 001-04121 |
| 4 | Open Document | Open Filing | Feb 25, 2015 | Feb 23, 2015 | 001-06523 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2014 | May 16, 2014 | 000-27261 |
| 4 | Open Document | Open Filing | May 9, 2014 | May 7, 2014 | 001-06523 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 6, 2014 | Mar 5, 2014 | 001-04121 |