| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 07/02/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/29/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/29/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/29/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/05/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/27/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/27/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/27/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/15/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/15/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

