| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 01/23/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/11/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/11/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/11/12 | 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 | |
| 01/04/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/22/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |