| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/11/15 | Annual report of employee stock purchase, savings and similar plans | 
       
   | 
  17 | ||
| 06/01/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/01/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/01/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/01/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | ||
| 06/01/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/01/15 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 06/01/15 | Current report filing | 
       
   | 
  5 | ||
| 05/22/15 | Current report filing | 
       
   | 
  3 | ||
| 05/21/15 | Current report filing | 
       
   | 
  7 | 
