| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 9, 2021 | Dec 8, 2021 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Aug 12, 2021 | Aug 11, 2021 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Dec 18, 2020 | Dec 16, 2020 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | May 7, 2020 | May 6, 2020 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2019 | May 7, 2019 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 26, 2019 | Mar 21, 2019 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Jan 10, 2019 | Jan 8, 2019 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Nov 9, 2018 | Nov 7, 2018 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 26, 2018 | Mar 22, 2018 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2018 | Jan 2, 2018 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Jan 3, 2018 | Jan 2, 2018 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2017 | May 15, 2017 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 27, 2017 | Mar 23, 2017 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 13, 2017 | Mar 10, 2017 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Nov 17, 2016 | Nov 17, 2016 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Nov 16, 2016 | Nov 14, 2016 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 14, 2016 | Mar 10, 2016 | 001-08625 | 
| 4 | Open Document | Open Filing | FORM 4 | Jan 19, 2016 | Jan 15, 2016 | 001-08625 | 
| 3 | Open Document | Open Filing | FORM 3 | Oct 20, 2015 | Oct 12, 2015 | 001-08625 |