| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2025 | May 16, 2025 | 000-15867 |
| 144 | Open Document | Open Filing | May 16, 2025 | |||
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2025 | May 8, 2025 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 | May 6, 2025 | May 2, 2025 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 | May 6, 2024 | May 2, 2024 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 21, 2024 | Mar 7, 2024 | 000-15867 |
| 144 | Open Document | Open Filing | Mar 7, 2024 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 31, 2023 | Feb 8, 2017 | 000-15867 |
| 144 | Open Document | Open Filing | Jul 27, 2023 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 8, 2023 | May 4, 2023 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 9, 2022 | May 5, 2022 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 2, 2022 | Apr 28, 2022 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 15, 2021 | Mar 12, 2021 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 1, 2021 | Feb 25, 2021 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 19, 2020 | Feb 14, 2020 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 4, 2019 | Feb 28, 2019 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 26, 2019 | Feb 22, 2019 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 30, 2018 | Jul 26, 2018 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 9, 2018 | Feb 7, 2018 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 22, 2017 | Feb 21, 2017 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 3, 2017 | Feb 1, 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 1, 2017 | Jan 30, 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 27, 2017 | Jan 25, 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 25, 2017 | Jan 23, 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 28, 2016 | Jul 26, 2016 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 27, 2016 | Jul 25, 2016 | 000-06217 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 9, 2016 | Feb 8, 2016 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 27, 2016 | Jan 23, 2016 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 28, 2015 | Jul 24, 2015 | 000-06217 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 10, 2015 | Feb 9, 2015 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 27, 2015 | Jan 23, 2015 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 21, 2015 | Jan 20, 2015 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 13, 2015 | Jan 13, 2015 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 26, 2014 | Aug 23, 2014 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 30, 2014 | Jul 26, 2014 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 28, 2014 | Jul 24, 2014 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 24, 2014 | Jul 22, 2014 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2014 | May 14, 2014 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 26, 2014 | Feb 26, 2014 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 6, 2014 | Feb 4, 2014 | 000-15867 |