| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 01/23/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/23/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/23/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/08/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/13 | 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 |