| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/20/18 | 8-K | Current report filing | 
       
   | 
  3 | |
| 03/19/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/16/18 | NT 10-K | Notice under Rule 12b25 of inability to timely file all or part of a Form 10-K, 10-KSB, or 10-KT | 
       
   | 
  3 | |
| 03/13/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/12/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 03/09/18 | 8-K | Current report filing | 
       
   | 
  370 | |
| 03/08/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 02/28/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 02/26/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  3 | |
| 02/14/18 | SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | 
       
   | 
  7 | 

