| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 01/09/07 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 01/03/07 | 5 | Annual statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/28/06 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/26/06 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 12/21/06 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/21/06 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/21/06 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/21/06 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/07/06 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 12/07/06 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 
