| 10-K405 | - | 2002-03-26 | 2001-12-30 |
| Passive ownership stake (update) | SC 13G/A | 2002-02-14 | - |
| Passive ownership stake | SC 13G | 2002-02-13 | - |
| Major company event | 8-K | 2002-01-14 | 2002-01-02 |
| Activist ownership stake | SC 13D | 2002-01-11 | - |
| Quarterly report | 10-Q | 2001-11-09 | 2001-09-30 |
| Activist ownership stake | SC 13D | 2001-10-05 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-08-10 | - |
| Quarterly report | 10-Q | 2001-08-09 | 2001-07-01 |
| Major company event | 8-K | 2001-05-15 | 2001-05-09 |
| Quarterly report | 10-Q | 2001-05-14 | 2001-04-01 |
| Proxy statement | DEF 14A | 2001-04-03 | 2001-05-09 |
| Annual report | 10-K | 2001-03-29 | 2000-12-31 |
| Activist ownership stake | SC 13D | 2001-03-15 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-02-14 | - |
| Quarterly report | 10-Q | 2000-11-14 | 2000-10-01 |
| Quarterly report | 10-Q | 2000-08-15 | 2000-07-02 |
| Quarterly report | 10-Q | 2000-05-15 | 2000-04-02 |
| Activist ownership stake (update) | SC 13D/A | 2000-05-11 | - |
| Activist ownership stake (update) | SC 13D/A | 2000-04-06 | - |
| Proxy statement | DEF 14A | 2000-04-05 | 2000-05-10 |
| Annual report | 10-K | 2000-03-31 | 2000-01-02 |
| Major company event | 8-K | 2000-02-22 | 2000-02-15 |
| Passive ownership stake (update) | SC 13G/A | 2000-02-14 | - |
| Major company event | 8-K | 1999-12-10 | 1999-12-06 |
| Activist ownership stake (update) | SC 13D/A | 1999-12-07 | - |
| Quarterly report | 10-Q | 1999-11-17 | 1999-10-03 |
| Activist ownership stake (update) | SC 13D/A | 1999-11-12 | - |
| Major company event | 8-K | 1999-11-08 | 1999-11-04 |
| Major company event | 8-K | 1999-10-22 | 1999-10-19 |
| Activist ownership stake (update) | SC 13D/A | 1999-10-19 | - |
| Quarterly report | 10-Q | 1999-08-17 | 1999-07-04 |
| Quarterly report | 10-Q | 1999-05-11 | 1999-04-04 |
| 424B3 | - | 1999-04-23 | - |
| 424B3 | - | 1999-04-19 | - |
| S-4 | - | 1999-04-06 | - |
| Proxy statement | DEF 14A | 1999-04-06 | 1999-05-12 |
| Annual report | 10-K | 1999-04-01 | 1999-01-03 |
| Passive ownership stake | SC 13G | 1999-03-09 | - |
| Major company event | 8-K | 1999-02-19 | 1999-01-15 |
| Securities registration | S-3 | 1999-01-22 | - |
| Activist ownership stake (update) | SC 13D/A | 1998-12-03 | - |
| Activist ownership stake (update) | SC 13D/A | 1998-11-25 | - |
| Quarterly report | 10-Q | 1998-11-10 | 1998-09-27 |
| Quarterly report | 10-Q | 1998-08-07 | 1998-06-28 |
| 15-12G | - | 1998-06-05 | - |
| Activist ownership stake (update) | SC 13D/A | 1998-06-02 | - |
| Quarterly report | 10-Q | 1998-05-12 | 1998-03-29 |
| Proxy statement | DEF 14A | 1998-04-07 | 1998-05-13 |
| Annual report | 10-K | 1998-03-27 | 1997-12-28 |
