| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/10/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 05/10/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 05/10/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 03/21/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 03/21/19 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/20/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 03/15/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 03/15/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 03/15/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 03/12/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 
 
			