| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/21/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 03/21/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 03/06/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 03/01/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 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 |
