| Date | Form | Description | Docs | XBRL | Pages |
| 12/23/11 | 3 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 12/23/11 | 3 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 09/15/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 09/15/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 09/15/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 01/04/11 | 3 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 12/29/10 | 3 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 12/29/10 | 3 | Statement of changes in beneficial ownership of securities |
|
2 |
