| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/28/12 | FWP | Form FWP: Filing under Securities Act Rules 163/433 of free writing prospectuses | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 |