| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 07/20/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/20/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/19/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/19/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/13/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/13/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/13/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/12/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/12/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 07/09/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
