| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/14/12 | Initial statement of beneficial ownership of securities |
|
2 | ||
| 02/21/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/21/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/21/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/21/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/03/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/05/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/04/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 12/14/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 11/28/11 | Statement of changes in beneficial ownership of securities |
|
1 |