| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 01/27/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/27/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/27/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/27/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/27/12 | S-3 | Form S-3: Registration statement for specified transactions by certain issuers | 14 | |
| 01/20/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/13/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/04/12 | SC 13D/A | Form SC 13D/A: Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities | 55 | |
| 01/04/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |