| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/27/19 | Definitive proxy statements | 
     PDF   
   | 
  105 | ||
| 03/27/19 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 03/18/19 | Current report filing | 
     PDF   
   | 
  6 | ||
| 03/08/19 | Current report filing | 
     PDF   
   | 
  8 | ||
| 02/22/19 | Current report filing | 
     PDF   
   | 
  114 | ||
| 02/20/19 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 02/20/19 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 02/20/19 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 02/20/19 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 02/20/19 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 |