| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/28/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/28/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 01/18/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 11/04/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 11/01/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 10/05/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 08/24/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 07/08/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 04/22/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 04/22/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 |
