| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/07/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/03/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/03/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/03/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/03/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/03/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/03/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/03/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/31/13 | 8-K | Current report filing | 
       
   | 
  2 | |
| 05/28/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 
