| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/20/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 03/20/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 03/20/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 03/14/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 03/14/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 03/14/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/10/14 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/10/14 | 3/A | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | |
| 02/10/14 | 4/A | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/10/13 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | 
