| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 02/29/12 | Annual report pursuant to Section 13 and 15(d) |
|
 |
68 | |
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
3 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 02/15/12 | Statement of changes in beneficial ownership of securities |
|
3 |