| 10-K405 | - | 2000-10-26 | 2000-07-31 |
| Major company event | 8-K | 2000-08-29 | 2000-08-28 |
| Quarterly report | 10-Q | 2000-06-09 | 2000-04-30 |
| Quarterly report | 10-Q | 2000-03-14 | 2000-01-31 |
| Passive ownership stake | SC 13G | 2000-02-11 | - |
| Passive ownership stake (update) | SC 13G/A | 2000-02-02 | - |
| Passive ownership stake | SC 13G | 2000-01-28 | - |
| Employee stock plan | S-8 | 1999-12-30 | - |
| Quarterly report | 10-Q | 1999-12-09 | 1999-10-31 |
| Proxy statement | DEF 14A | 1999-11-01 | 1999-12-07 |
| PRE 14A | - | 1999-10-20 | 1999-12-07 |
| 10-K405 | - | 1999-10-18 | 1999-07-31 |
| Quarterly report | 10-Q | 1999-06-14 | 1999-04-30 |
| Quarterly report (amended) | 10-Q/A | 1999-03-15 | 1998-10-31 |
| Quarterly report | 10-Q | 1999-03-11 | 1999-01-31 |
| Passive ownership stake (update) | SC 13G/A | 1999-02-11 | - |
| Passive ownership stake (update) | SC 13G/A | 1999-02-05 | - |
| Passive ownership stake (update) | SC 13G/A | 1999-02-02 | - |
| Quarterly report | 10-Q | 1998-12-08 | 1998-10-31 |
| Proxy statement | DEF 14A | 1998-10-26 | 1998-10-13 |
| 10-K405 | - | 1998-10-14 | 1998-07-31 |
| Quarterly report | 10-Q | 1998-06-11 | 1998-04-30 |
| Activist ownership stake | SC 13D | 1998-05-15 | - |
| Quarterly report | 10-Q | 1998-03-16 | 1998-01-31 |
| Passive ownership stake (update) | SC 13G/A | 1998-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 1998-02-09 | - |
| Passive ownership stake (update) | SC 13G/A | 1998-01-22 | - |
| Quarterly report | 10-Q | 1997-12-12 | 1997-10-31 |
| Proxy statement | DEF 14A | 1997-11-12 | 1997-12-09 |
| Annual report | 10-K | 1997-10-28 | 1997-07-31 |
| Quarterly report | 10-Q | 1997-06-02 | 1997-04-30 |
| Quarterly report | 10-Q | 1997-03-11 | 1997-01-31 |
| Passive ownership stake (update) | SC 13G/A | 1997-02-13 | - |
| Passive ownership stake | SC 13G | 1997-02-13 | - |
| Activist ownership stake (update) | SC 13D/A | 1997-02-13 | - |
| Passive ownership stake | SC 13G | 1997-02-10 | - |
| Passive ownership stake (update) | SC 13G/A | 1997-02-10 | - |
| Passive ownership stake | SC 13G | 1997-01-28 | - |
| Quarterly report | 10-Q | 1996-12-09 | 1996-10-31 |
| Proxy statement | DEF 14A | 1996-11-13 | 1996-12-05 |
| Annual report | 10-K | 1996-10-28 | 1996-07-31 |
| Quarterly report | 10-Q | 1996-06-05 | 1996-04-30 |
