| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 03/31/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/31/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/28/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/23/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/08/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/17/11 | 3 | Form 3: Initial statement of beneficial ownership of securities | 2 | |
| 01/11/11 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 01/03/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/30/10 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |
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