| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/07/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/23/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/12/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/05/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 12/07/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 11/23/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 11/10/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 11/07/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 09/07/11 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 08/26/11 | Statement of changes in beneficial ownership of securities |
|
1 |