| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/26/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  4 | |
| 04/18/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  4 | |
| 04/18/17 | 8-K | Current report filing | 
       
   | 
  15 | |
| 04/07/17 | DEFA14A | Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 
       
   | 
  5 | |
| 04/07/17 | DEF 14A | Definitive proxy statements | 
       
   | 
  53 | |
| 04/03/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/03/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/24/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/24/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/24/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 

