| S-8 | Securities offered to employees pursuant to employee benefit plans | Dec 21, 2012 |  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 POS | Post-effective amendment to an S-8 filing | Jun 8, 2012 | Open Post-effective amendment to an S-8 filing in HTML.Open Post-effective amendment to an S-8 filing in DOC file.Open Post-effective amendment to an S-8 filing in PDF file.Open Post-effective amendment to an S-8 filing in XLS file. |
| S-8 | Securities offered to employees pursuant to employee benefit plans | Jun 4, 2012 | 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. |
| 424B3 | Form of prospectus reflecting facts events constituting substantive change from last form | Mar 28, 2012 | Open Form of prospectus reflecting facts events constituting substantive change from last form in HTML.Open Form of prospectus reflecting facts events constituting substantive change from last form in DOC file.Open Form of prospectus reflecting facts events constituting substantive change from last form in PDF file.Open Form of prospectus reflecting facts events constituting substantive change from last form in XLS file. |
| S-4 | POS Post-effective amendment to an S-4EF filing | Jan 31, 2012 | Open POS Post-effective amendment to an S-4EF filing in HTML.Open POS Post-effective amendment to an S-4EF filing in DOC file.Open POS Post-effective amendment to an S-4EF filing in PDF file.Open POS Post-effective amendment to an S-4EF filing in XLS file. |