| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/04/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/31/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 11/27/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 09/18/12 | 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 | |
| 01/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/04/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 11/14/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 11/10/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 10/15/08 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |