| 424B7 | Prospectus | Nov 6, 2018 |  Open Prospectus in HTML. Open Prospectus in DOC file. Open Prospectus in PDF file. Open Prospectus in XLS file. |
| S-3 | Simplified registration form | Sep 26, 2018 | Open Simplified registration form in HTML.Open Simplified registration form in DOC file.Open Simplified registration form in PDF file.Open Simplified registration form in XLS file. |
| 424B7 | Prospectus | Aug 20, 2018 | Open Prospectus in HTML.Open Prospectus in DOC file.Open Prospectus in PDF file.Open Prospectus in XLS file. |
| 424B7 | Prospectus | Aug 20, 2018 | Open Prospectus in HTML.Open Prospectus in DOC file.Open Prospectus in PDF file.Open Prospectus in XLS file. |
| 424B7 | Prospectus | Aug 16, 2018 | Open Prospectus in HTML.Open Prospectus in DOC file.Open Prospectus in PDF file.Open Prospectus in XLS file. |
| 424B7 | Prospectus | Aug 16, 2018 | Open Prospectus in HTML.Open Prospectus in DOC file.Open Prospectus in PDF file.Open Prospectus in XLS file. |
| S-8 | Securities offered to employees pursuant to employee benefit plans | Jun 22, 2018 | Open Securities offered to employees pursuant to employee benefit plans in HTML.Open Securities offered to employees pursuant to employee benefit plans in DOC file.Open Securities offered to employees pursuant to employee benefit plans in PDF file.Open Securities offered to employees pursuant to employee benefit plans in XLS file. |
| S-8 | Securities offered to employees pursuant to employee benefit plans | Apr 17, 2018 | Open Securities offered to employees pursuant to employee benefit plans in HTML.Open Securities offered to employees pursuant to employee benefit plans in DOC file.Open Securities offered to employees pursuant to employee benefit plans in PDF file.Open Securities offered to employees pursuant to employee benefit plans in XLS file. |
