| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Mar 24, 2022 | Mar 7, 2022 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Feb 28, 2022 | Feb 25, 2022 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Feb 24, 2021 | Feb 18, 2021 | 000-17007 | 
| 4 | Open Document | Open Filing | Mar 4, 2020 | Feb 27, 2020 | 000-17007 | |
| 4 | Open Document | Open Filing | FORM 4 | Feb 28, 2019 | Feb 26, 2019 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Feb 22, 2019 | Feb 19, 2019 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Feb 26, 2018 | Feb 22, 2018 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 2, 2017 | Feb 28, 2017 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Feb 25, 2016 | Feb 23, 2016 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 16, 2015 | Mar 12, 2015 | 000-17007 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2014 | Feb 28, 2014 | 000-17007 |