| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/27/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/27/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/27/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/07/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/03/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 11/30/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 11/30/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |