| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/25/15 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/25/15 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/22/15 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/22/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/22/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/18/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/18/15 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/18/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/17/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/17/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 


