| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/06/07 | 4/A | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/06/07 | 4/A | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/30/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/30/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/30/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/30/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/30/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/30/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/30/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/14/07 | 5 | Annual statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

