| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/29/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/28/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/23/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/23/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/23/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/23/12 | Statement of changes in beneficial ownership of securities |
|
2 |