| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/21/17 | 11-K | Annual report of employee stock purchase, savings and similar plans | 
       
   | 
  14 | |
| 06/21/17 | 8-K | Current report filing | 
       
   | 
  4 | |
| 05/26/17 | 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) | 
       
   | 
  10 | |
| 05/10/17 | 10-Q | Quarterly report pursuant to Section 13 or 15(d) | 
       
   | 
  
                                           | 
  38 | 
| 04/28/17 | 8-K | Current report filing | 
       
   | 
  15 | |
| 04/26/17 | 8-K | Current report filing | 
       
   | 
  4 | |
| 04/03/17 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  3 | |
| 04/03/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 04/03/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 04/03/17 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 



