| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 28, 2021 | May 28, 2021 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 16, 2021 | Mar 5, 2021 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Oct 19, 2020 | Oct 19, 2020 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Oct 17, 2019 | Oct 17, 2019 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Jan 26, 2018 | Jan 26, 2018 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 2, 2017 | Mar 2, 2017 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Jan 30, 2017 | Jan 26, 2017 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Apr 1, 2016 | Mar 31, 2016 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 4, 2016 | Mar 2, 2016 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 | Jan 28, 2016 | Jan 27, 2016 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 2, 2015 | Mar 31, 2015 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 5, 2015 | Mar 3, 2015 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 29, 2015 | Jan 28, 2015 | 001-36137 | 
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 2, 2014 | Mar 31, 2014 | 001-36137 |