| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/21/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/12/13 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/07/13 | 4 | Statement of changes in beneficial ownership of securities |   | 3 | 
