| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/21/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/21/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/21/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/21/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/21/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 05/02/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/16/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 02/07/17 | Annual statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 01/31/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 01/31/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
