| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 05/24/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 04/17/12 | 4 | Statement of changes in beneficial ownership of securities | 1 |