| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/21/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/17/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/14/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/09/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 01/03/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 12/20/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 12/09/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 10/04/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 08/15/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 08/11/11 | 5 | Annual statement of changes in beneficial ownership of securities |
|
2 |
