| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/08/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/08/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/31/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/31/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/31/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/31/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 12/28/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/08/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/08/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |