| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 07/20/17 | 3/A | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 07/20/17 | 3/A | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 07/20/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 06/30/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 06/30/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 06/30/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 06/30/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 06/30/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | |
| 06/07/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/07/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  1 | 
