| Filing Date | Form | Description | Filing Group | Downloads |
| 03.01.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |  |  |  |  |
| 03.01.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 03.01.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.29.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.28.12 | 10-K | Annual report which provides a comprehensive overview of the company for the past year | Annual Filings | |  | |  |
| 02.28.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.28.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.22.12 | 8-K | Report of unscheduled material events or corporate event | Current Reports | | | | |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |