| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 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 | ||
| 05/06/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 05/03/13 | Current report filing | 
       
   | 
  3 | ||
| 04/30/13 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 04/30/13 | A correspondence can be sent as a document with another submission type or can be sent as a separate submission. | 
       
   | 
  4 | ||
| 04/30/13 | Current report filing | 
       
   | 
  58 | ||
| 04/26/13 | Prospectus filed pursuant to Rule 424(b)(2) | 
       
   | 
  98 | 
