| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 04/28/11 | DEF 14A | Form DEF 14A: Definitive proxy statements | 83 | |
| 06/01/10 | DEFA14A | Form DEFA14A: Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 3 | |
| 04/30/10 | DEF 14A | Form DEF 14A: Definitive proxy statements | 105 | |
| 04/30/09 | DEF 14A | Form DEF 14A: Definitive proxy statements | 76 | |
| 04/29/08 | DEF 14A | Form DEF 14A: Definitive proxy statements | 74 | |
| 04/04/08 | PRE 14A | Form PRE 14A: Preliminary proxy statement not related to a contested matter or merger/acquisition | 72 | |
| 04/30/07 | DEF 14A | Form DEF 14A: Definitive proxy statements | 72 | |
| 04/23/01 | DEF 14A | Form DEF 14A: Definitive proxy statements | 34 | |
| 04/21/00 | DEF 14A | Form DEF 14A: Definitive proxy statements | 29 | |
| 12/15/99 | DEF 14A | Form DEF 14A: Definitive proxy statements | 8 |