| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/21/19 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 06/21/19 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 06/21/19 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 06/13/19 | 8-K | Current report filing | 
       
   | 
  5 | |
| 06/11/19 | 424B5 | Prospectus filed pursuant to Rule 424(b)(5) | 
       
   | 
  101 | |
| 06/11/19 | 8-K | Current report filing | 
       
   | 
  37 | |
| 05/29/19 | 8-K | Current report filing | 
       
   | 
  6 | |
| 05/15/19 | 8-K | Current report filing | 
       
   | 
  6 | |
| 05/14/19 | 8-K | Current report filing | 
       
   | 
  3 | |
| 05/10/19 | 8-K | Current report filing | 
       
   | 
  41 | 
