| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 04/27/12 | 8-K/A | Form 8-K/A: Current report | 9 | |
| 04/26/12 | 8-K | Form 8-K: Current report | 9 | |
| 04/25/12 | ARS | Form ARS: Annual Report to Security Holders | 104 | |
| 04/23/12 | 3 | Form 3: Initial statement of beneficial ownership of securities | 1 | |
| 04/13/12 | DEFA14A | Form DEFA14A: Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 3 | |
| 04/13/12 | DEF 14A | Form DEF 14A: Definitive proxy statements | 74 | |
| 04/11/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 04/11/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 04/11/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 04/11/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |
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