| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/14/13 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 02/14/13 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 3 | |
| 02/14/13 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 6 | |
| 02/12/13 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 02/08/13 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 5 | |
| 02/01/13 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 4 | |
| 01/25/13 | UPLOAD | Form UPLOAD: SEC-generated letter | 1 | |
| 01/23/13 | CORRESP | Form CORRESP: Correspondence | 2 | |
| 01/16/13 | UPLOAD | Form UPLOAD: SEC-generated letter | 2 | |
| 01/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |
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