| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 08/24/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/23/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/17/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/17/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/16/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/16/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/15/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/10/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/10/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/09/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
