| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/07/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/30/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/30/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/23/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/11/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 12/09/11 | Statement of changes in beneficial ownership of securities |
|
2 |