| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 10/16/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/13/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/13/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 08/16/11 | 3 | Form 3: Initial statement of beneficial ownership of securities | 1 |