| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/17/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/17/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/17/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/10/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/10/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/07/12 | Annual statement of changes in beneficial ownership of securities |
|
2 |