| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 01/21/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/21/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/17/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/14/20 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 
