| Date | Form | Description | XBRL |
|---|---|---|---|
| 04/09/12 | DEF 14A | Form DEF 14A: Definitive proxy statements | |
| 04/06/12 | ARS | Form ARS: Annual report to security holders | |
| 04/04/12 | 424B5 | Form 424B5: Prospectus filed pursuant to Rule 424(b)(5) | |
| 04/03/12 | FWP | Form FWP: Filing under Securities Act Rules 163/433 of free writing prospectuses | |
| 04/02/12 | 424B3 | Form 424B3: Prospectus filed pursuant to Rule 424(b)(3) | |
| 04/02/12 | POSASR | Form POSASR: Post-effective Amendment to an automatic shelf registration statement on Form S-3ASR or Form F-3ASR | |
| 02/24/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | |
| 02/16/12 | 10-K | Form 10-K: Annual report pursuant to Section 13 and 15(d) |
|
| 02/16/12 | 8-K | Form 8-K: Current report filing | |
| 02/14/12 | SC 13G | Form SC 13G: Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions |