| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 04/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 04/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 04/03/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 04/02/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/29/13 | 11-K | Form 11-K: Annual report of employee stock purchase, savings and similar plans | 4 | |
| 03/28/13 | PRE 14A | Form PRE 14A: Preliminary proxy statement not related to a contested matter or merger/acquisition | 53 | |
| 03/18/13 | 8-K | Form 8-K: Current report filing | 3 | |
| 03/15/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/15/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 03/15/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |