| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/02/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/14/12 | Annual statement of changes in beneficial ownership of securities |
|
1 | ||
| 07/19/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 05/27/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 05/12/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 05/12/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 05/12/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 05/12/11 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 05/12/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 05/12/11 | Statement of changes in beneficial ownership of securities |
|
1 |