| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 06/10/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 06/10/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 06/05/15 | 5 | Annual statement of changes in beneficial ownership of securities | 
       
   | 
  1 | |
| 05/28/15 | UPLOAD | SEC-generated letter | 
       
   | 
  1 | |
| 05/19/15 | CORRESP | A correspondence can be sent as a document with another submission type or can be sent as a separate submission. | 
       
   | 
  3 | |
| 05/01/15 | 424B3 | Prospectus filed pursuant to Rule 424(b)(3) | 
       
   | 
  1 | |
| 04/30/15 | UPLOAD | SEC-generated letter | 
       
   | 
  3 | |
| 04/30/15 | 4 | Statement of changes in beneficial ownership of securities | 
       
   | 
  2 | |
| 04/29/15 | 8-K | Current report filing | 
       
   | 
  3 | |
| 04/29/15 | 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 | 
       
   | 
  4 | 
           
