| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/23/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/23/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/23/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 12/02/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 11/28/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 11/09/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 11/09/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 09/14/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 09/13/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 09/13/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 |