| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 01/26/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/26/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/25/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/20/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/18/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/17/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/06/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/04/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/04/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/28/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |