| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 08/01/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 08/01/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 08/01/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 07/29/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 07/28/11 | Quarterly report pursuant to Section 13 or 15(d) | 
       
   | 
  
                         | 
  38 | |
| 07/26/11 | Current report filing | 
       
   | 
  9 | ||
| 07/26/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 07/26/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 07/26/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 07/26/11 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 


