| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/01/15 | SEC-generated letter | 
     PDF   
   | 
  2 | ||
| 03/27/15 | Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 
     PDF   
   | 
  2 | ||
| 03/26/15 | Annual report to security holders | 
     PDF   
   | 
  1 | ||
| 03/25/15 | Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 
     PDF   
   | 
  5 | ||
| 03/25/15 | Definitive proxy statements | 
     PDF   
   | 
  82 | ||
| 02/23/15 | Current report filing | 
     PDF   
   | 
  3 | ||
| 02/18/15 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 02/18/15 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 02/18/15 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 | ||
| 02/18/15 | Statement of changes in beneficial ownership of securities | 
     PDF   
   | 
  1 |