| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 01/23/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 11/21/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 11/21/11 | Initial statement of beneficial ownership of securities |
|
1 | ||
| 07/28/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 07/28/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 07/22/11 | Initial statement of beneficial ownership of securities |
|
2 | ||
| 07/22/11 | Initial statement of beneficial ownership of securities |
|
2 | ||
| 07/22/11 | Initial statement of beneficial ownership of securities |
|
2 | ||
| 07/22/11 | Initial statement of beneficial ownership of securities |
|
2 | ||
| 07/22/11 | Initial statement of beneficial ownership of securities |
|
2 |