| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 07/08/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 06/02/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 06/01/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 06/01/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 05/29/20 | 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) | 
       
   | 
  8 | |
| 05/28/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 05/26/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 05/26/20 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 05/19/20 | 8-K | Current report filing | 
       
   | 
  
                                            | 
  63 | 
| 05/11/20 | 10-Q | Quarterly report pursuant to Section 13 or 15(d) | 
       
   | 
  
                                            | 
  34 | 




