| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/19/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/11/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/04/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/04/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/04/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/04/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/04/13 | Current report filing | 
       
   | 
  5 | ||
| 05/29/13 | Current report filing | 
       
   | 
  3 | ||
| 05/22/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 05/20/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 
