| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/11/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/09/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 02/09/11 | CORRESP | Form CORRESP: A correspondence can be sent as a document with another submission type or can be sent as a separate submission. | 1 | |
| 01/31/11 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 2 | |
| 01/31/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/31/11 | UPLOAD | Form UPLOAD: SEC-generated letter | 1 | |
| 01/26/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/26/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/26/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 01/26/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 |