| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 08/03/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/03/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/03/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/02/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 08/01/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/27/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/27/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 07/26/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/26/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/25/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
