| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/28/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 05/22/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 05/20/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 05/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 05/13/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 05/06/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 05/06/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 04/29/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 04/28/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 04/24/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
