| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/01/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 04/01/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 04/01/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 04/01/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/25/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/19/10 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | ||
| 03/02/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/23/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/23/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/23/10 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
