| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 1, 2023 | Mar 15, 2022 | 001-35569 | |
| 4 | Open Document | Open Filing | FORM 4 | Mar 15, 2022 | Mar 11, 2022 | 001-35569 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 18, 2021 | Mar 15, 2021 | 001-35569 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 18, 2020 | Mar 16, 2020 | 001-35569 |
| 3 | Open Document | Open Filing | FORM 3 | Mar 18, 2020 | Mar 16, 2020 | 001-35569 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2017 | Nov 8, 2017 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 9, 2017 | Nov 7, 2017 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2016 | Nov 16, 2016 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 14, 2016 | Nov 9, 2016 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 9, 2016 | Nov 8, 2016 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 29, 2016 | Jul 27, 2016 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 2, 2015 | Dec 1, 2015 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 12, 2015 | Nov 10, 2015 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 6, 2015 | Nov 4, 2015 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2015 | Mar 17, 2015 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 26, 2014 | Nov 24, 2014 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2014 | Nov 12, 2014 | 000-14902 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 10, 2014 | Nov 6, 2014 | 000-14902 |