| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/08/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/08/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/08/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/02/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/01/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/01/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/01/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 01/26/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 01/25/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 01/25/18 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
