| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/26/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/25/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/18/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/11/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/06/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/06/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/04/13 | 4 | Statement of changes in beneficial ownership of securities | 1 | ||
| 03/04/13 | 4 | Statement of changes in beneficial ownership of securities | 1 |