| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/19/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/19/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/13/13 | Annual statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/05/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/30/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 01/11/13 | Statement of changes in beneficial ownership of securities |
|
2 |