| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/08/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/23/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/21/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/05/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/03/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/03/15 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | |
| 08/03/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 08/03/15 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 07/30/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 07/30/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

