| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/11/11 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 02/10/11 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 01/31/11 | 8-K | Form 8-K: Current report | 5 | |
| 01/25/11 | 8-K | Form 8-K: Current report | 3 | |
| 01/12/11 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 2 | |
| 12/15/10 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/15/10 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/13/10 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 1 | |
| 12/13/10 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/13/10 | 144 | Form 144: Report of proposed sale of securities | 2 |
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