| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/07/12 | ARS | Annual report to security holders |
|
1 | |
| 04/30/12 | DEF 14A | Definitive proxy statements |
|
34 | |
| 04/17/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 04/17/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 04/10/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 04/03/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 04/03/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 03/27/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 03/20/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 03/15/12 | 10-K | Annual report pursuant to Section 13 and 15(d) |
|
   |
133 |
