| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 1, 2021 | Nov 30, 2021 | 001-07982 | 
| 4 | Open Document | Open Filing | FORM 4 | May 27, 2021 | May 25, 2021 | 001-07982 | 
| 5 | Open Document | Open Filing | FORM 5 | Feb 3, 2021 | Jan 31, 2021 | 001-07982 | 
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2020 | May 20, 2020 | 001-07982 | 
| 5 | Open Document | Open Filing | FORM 5 | Feb 10, 2020 | Jan 31, 2020 | 001-07982 | 
| 4 | Open Document | Open Filing | FORM 4 | May 23, 2019 | May 21, 2019 | 001-07982 | 
| 5 | Open Document | Open Filing | FORM 5 | Feb 4, 2019 | Jan 31, 2019 | 001-07982 | 
| 4 | Open Document | Open Filing | FORM 4 | Jul 12, 2018 | Jul 11, 2018 | 001-07982 | 
| 3 | Open Document | Open Filing | FORM 3 | Jul 12, 2018 | Jul 11, 2018 | 001-07982 | 
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 7, 2018 | Jun 7, 2018 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 16, 2017 | Nov 15, 2017 | 001-16167 | 
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 16, 2017 | Oct 26, 2017 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 30, 2017 | Oct 26, 2017 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 18, 2017 | Jul 12, 2017 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 14, 2017 | Jun 13, 2017 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 6, 2017 | Jun 2, 2017 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 17, 2016 | Nov 15, 2016 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 19, 2016 | Oct 17, 2016 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 24, 2015 | Nov 23, 2015 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 17, 2015 | Oct 26, 2015 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 28, 2015 | Oct 26, 2015 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 29, 2014 | Oct 27, 2014 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 3, 2014 | Aug 31, 2014 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 10, 2014 | Jul 8, 2014 | 001-16167 | 
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 28, 2014 | May 23, 2014 | 001-16167 |