| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 11/16/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/16/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/16/12 | 4/A | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/14/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/14/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/14/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/14/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/14/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/14/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/14/12 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 

