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| Date | Form | Description | Docs | XBRL | Pages |
| 02/23/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/23/12 | 10-K | Annual report pursuant to Section 13 and 15(d) |
|
|
455 |
| 02/22/12 | 424B2 | Prospectus filed pursuant to Rule 424(b)(2) |
|
30 | |
| 02/22/12 | 424B2 | Prospectus filed pursuant to Rule 424(b)(2) |
|
14 | |
| 02/22/12 | 424B2 | Prospectus filed pursuant to Rule 424(b)(2) |
|
14 | |
| 02/21/12 | 424B2 | Prospectus filed pursuant to Rule 424(b)(2) |
|
10 | |
| 02/21/12 | 424B2 | Prospectus filed pursuant to Rule 424(b)(2) |
|
13 | |
| 02/17/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/17/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/17/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 |