| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/14/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/13/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/13/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/13/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/10/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 02/10/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/31/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/04/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/03/12 | Statement of changes in beneficial ownership of securities |
|
1 | ||
| 01/03/12 | Statement of changes in beneficial ownership of securities |
|
1 |