| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/16/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 02/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 02/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 02/10/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 02/09/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 02/07/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 02/02/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 02/01/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 01/25/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 | |
| 01/17/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 3 |