| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/21/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/21/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/21/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/21/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/19/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/19/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/19/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/19/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/07/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/25/13 | 3 | Form 3: Initial statement of beneficial ownership of securities | 3 |