| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/21/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/15/13 | 10-Q | Quarterly report pursuant to sections 13 or 15(d) | 
       
   | 
  
                                            | 
  32 | 
| 04/08/13 | 8-K | Current report filing | 
       
   | 
  6 | |
| 04/01/13 | 10-K | Annual report pursuant to section 13 and 15(d) | 
       
   | 
  
                                            | 
  79 | 
| 03/20/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 




