| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 03/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 03/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 03/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 03/09/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 03/08/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 03/08/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/27/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/23/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/05/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 11/16/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 |