| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/15/12 | Annual statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/28/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/28/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/26/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/25/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/25/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/25/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/25/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/25/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 10/25/11 | Statement of changes in beneficial ownership of securities |
|
2 |