| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/03/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/27/16 | SD | Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1) | 
       
   | 
  14 | |
| 05/26/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/05/16 | 10-Q | Quarterly report pursuant to Section 13 or 15(d) | 
       
   | 
  
                                            | 
  45 | 
| 04/28/16 | 8-K | Current report filing | 
       
   | 
  20 | |
| 04/21/16 | DEF 14A | Definitive proxy statements | 
       
   | 
  52 | |
| 04/21/16 | DEFA14A | Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 
       
   | 
  5 | |
| 03/02/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/02/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/02/16 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | 




