| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/12/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/06/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 01/29/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 01/17/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 11/26/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 10/31/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 10/29/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/02/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/23/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/16/13 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

