| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/04/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 03/04/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 02/25/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 02/22/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 02/22/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 02/20/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 02/19/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 01/09/13 | Statement of changes in beneficial ownership of securities | 1 | |||
| 12/20/12 | Statement of changes in beneficial ownership of securities | 2 | |||
| 12/14/12 | Statement of changes in beneficial ownership of securities | 1 |