| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/22/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/22/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/22/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/22/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/22/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/22/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/22/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/21/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/20/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/20/19 | Current report filing | 
       
   | 
  38 | 
