| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/08/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/07/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/04/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/08/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/08/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/08/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/08/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/02/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/02/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/02/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

