| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 05/02/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 04/20/12 | 8-K | Form 8-K: Current report | 126 | |
| 04/19/12 | 8-K | Form 8-K: Current report | 6 | |
| 04/19/12 | 424B5 | Form 424B5: Prospectus [Rule 424(b)(5)] | 71 | |
| 04/19/12 | S-3ASR | Form S-3ASR: Automatic shelf registration statement of securities of well-known seasoned issuers | 75 | |
| 04/17/12 | CORRESP | Form CORRESP: Correspondence | 8 | |
| 04/03/12 | UPLOAD | Form UPLOAD: SEC-generated letter | 3 | |
| 03/20/12 | CERTNYS | Form CERTNYS: Certification by the New York Stock Exchange approving securities for listing | 1 | |
| 03/20/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/20/12 | DEF 14A | Form DEF 14A: Definitive proxy statements | 69 |