| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/17/13 | Current report filing | 
       
   | 
  5 | ||
| 05/17/13 | Current report filing | 
       
   | 
  5 | ||
| 05/14/13 | SEC-generated letter | 
       
   | 
  1 | ||
| 05/13/13 | A correspondence can be sent as a document with another submission type or can be sent as a separate submission. | 
       
   | 
  2 | ||
| 05/08/13 | Quarterly report pursuant to Section 13 or 15(d) | 
       
   | 
  
                  | 
  60 | |
| 05/08/13 | SEC-generated letter | 
       
   | 
  2 | ||
| 05/06/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 05/06/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 05/06/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 05/06/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

