| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 01/18/12 | Annual statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/18/12 | Annual statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/18/12 | Annual statement of changes in beneficial ownership of securities |
|
2 | ||
| 12/12/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 11/17/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 11/16/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 08/12/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 06/20/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 06/02/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 05/23/11 | Statement of changes in beneficial ownership of securities |
|
2 |