| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 02/14/12 | SC 13D/A | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities | 8 |