| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/04/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 04/03/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 02/27/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/27/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/27/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/27/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/27/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/27/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/27/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/21/07 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
