| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/14/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 03/13/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 03/13/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/29/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/24/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/22/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/22/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/22/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/21/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/14/12 | Statement of changes in beneficial ownership of securities |
|
1 |