| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/23/19 | 8-K | Current report filing | 
       
   | 
  15 | |
| 04/18/19 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/18/19 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/12/19 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/12/19 | DEF 14A | Definitive proxy statements | 
       
   | 
  53 | |
| 04/08/19 | 8-K | Current report filing | 
       
   | 
  5 | |
| 04/05/19 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/03/19 | 8-K | Current report filing | 
       
   | 
  24 | |
| 03/01/19 | 10-K | Annual report pursuant to Section 13 and 15(d) | 
       
   | 
  
                                | 
  120 | 
| 02/14/19 | SC 13G/A | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | 
       
   | 
  5 | 




