| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 01/23/13 | UPLOAD | Form UPLOAD: SEC-generated letter | 1 | |
| 01/04/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/04/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/20/12 | CORRESP | Form CORRESP: A correspondence can be sent as a document with another submission type or can be sent as a separate submission. | 3 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/14/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |