| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/14/17 | Annual statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 02/14/17 | Annual statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/03/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/03/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 01/03/17 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 12/20/16 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 12/20/16 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 12/20/16 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 12/20/16 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 12/16/16 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 
