| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/01/12 | 3 | Initial statement of beneficial ownership of securities | 
       
   | 
  2 | |
| 04/20/12 | 8-K | Current report filing | 
       
   | 
  6 | |
| 04/19/12 | 8-K/A | Current report filing | 
       
   | 
  73 | |
| 04/16/12 | CORRESP | A correspondence can be sent as a document with another submission type or can be sent as a separate submission. | 
       
   | 
  1 | |
| 03/27/12 | UPLOAD | SEC-generated letter | 
       
   | 
  7 | |
| 02/28/12 | 8-K/A | Current report filing | 
       
   | 
  68 | |
| 02/22/12 | UPLOAD | SEC-generated letter | 
       
   | 
  1 | |
| 02/21/12 | 8-K/A | Current report filing | 
       
   | 
  49 | |
| 02/17/12 | UPLOAD | SEC-generated letter | 
       
   | 
  1 | |
| 02/10/12 | 8-K | Current report filing | 
       
   | 
  100 | 
