| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 03/26/13 | DEFA14A | Form DEFA14A: Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 2 | |
| 03/20/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/20/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/20/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/20/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/20/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/19/13 | DEF 14A | Form DEF 14A: Definitive proxy statements | 53 | |
| 03/05/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/05/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/05/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |