| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/25/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/25/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/08/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/26/12 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 1 | |
| 12/26/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 11/19/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |