| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/21/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/17/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/15/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/13/12 | 5/A | Form 5/A: Annual statement of changes in beneficial ownership of securities | 1 | |
| 02/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/08/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/06/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/03/12 | 5 | Form 5: Annual statement of changes in beneficial ownership of securities | 1 | |
| 02/02/12 | 5 | Form 5: Annual statement of changes in beneficial ownership of securities | 1 | |
| 01/04/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |