| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/10/12 | Initial statement of beneficial ownership of securities |
|
1 | ||
| 02/10/12 | Initial statement of beneficial ownership of securities |
|
1 | ||
| 11/23/11 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 11/23/11 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 11/16/11 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 11/14/11 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 11/09/11 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 11/07/11 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 08/18/11 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 08/15/11 | Statement of changes in beneficial ownership of securities |
|
3 |
