| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 08/13/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/13/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/13/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/13/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/13/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 08/11/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 07/22/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 07/16/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 07/01/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/10/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

