| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/05/12 | Initial statement of beneficial ownership of securities |
|
1 | ||
| 02/21/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/06/12 | Statement of changes in beneficial ownership of securities |
|
1 |