| Date | Form | Description | XBRL |
|---|---|---|---|
| 04/20/01 | DEF 14A | Form DEF 14A: Definitive proxy statements | |
| 03/23/01 | PRE 14A | Form PRE 14A: Preliminary proxy statement not related to a contested matter or merger/acquisition | |
| 03/31/00 | DEF 14A | Form DEF 14A: Definitive proxy statements | |
| 04/01/99 | DEF 14A | Form DEF 14A: Definitive proxy statements | |
| 03/02/98 | DEFM14A | Form DEFM14A: Definitive proxy statement relating to a merger, acquisition, or disposition |