| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/03/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/02/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/02/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/02/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/27/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/26/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/19/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/19/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/18/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/18/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 
