| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/08/12 | Initial statement of beneficial ownership of securities |
|
1 | ||
| 08/19/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 08/19/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 03/04/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 03/04/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 03/04/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/24/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/24/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/24/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/18/11 | Statement of changes in beneficial ownership of securities |
|
1 |