| Employee plan annual report | 11-K | 2001-06-26 | 2000-12-30 |
| Employee plan annual report | 11-K | 2001-06-26 | 2000-12-31 |
| Employee plan annual report | 11-K | 2001-06-26 | 2000-12-31 |
| Employee plan annual report | 11-K | 2001-06-26 | 2000-12-30 |
| Quarterly report | 10-Q | 2001-05-09 | 2001-03-31 |
| Proxy statement | DEF 14A | 2001-03-22 | 2001-04-25 |
| Annual report | 10-K | 2001-03-14 | 2000-12-30 |
| Passive ownership stake (update) | SC 13G/A | 2001-02-14 | - |
| Quarterly report | 10-Q | 2000-11-13 | 2000-09-30 |
| Quarterly report | 10-Q | 2000-08-14 | 2000-07-01 |
| Employee plan annual report | 11-K | 2000-06-26 | 1999-12-31 |
| Employee plan annual report | 11-K | 2000-06-26 | 1999-12-31 |
| Employee plan annual report | 11-K | 2000-06-26 | 1999-12-31 |
| Employee plan annual report | 11-K | 2000-06-26 | 1999-12-31 |
| Quarterly report | 10-Q | 2000-05-12 | 2000-04-01 |
| 10-K405 | - | 2000-03-17 | 2000-01-01 |
| Proxy statement | DEF 14A | 2000-03-15 | 2000-04-26 |
| Passive ownership stake (update) | SC 13G/A | 2000-02-14 | - |
| Quarterly report | 10-Q | 1999-11-08 | 1999-10-02 |
| Passive ownership stake | SC 13G | 1999-10-08 | - |
| SC 14D1/A | - | 1999-09-27 | - |
| Prospectus supplement | 424B5 | 1999-09-16 | - |
| POS AM | - | 1999-09-03 | - |
| SC 14D1 | - | 1999-08-27 | - |
| Quarterly report (amended) | 10-Q/A | 1999-08-13 | 1999-07-03 |
| Quarterly report | 10-Q | 1999-08-12 | 1999-07-03 |
| Securities registration | S-3 | 1999-08-05 | - |
| Prospectus supplement | 424B5 | 1999-07-14 | - |
| Prospectus supplement | 424B5 | 1999-07-09 | - |
| Employee plan annual report | 11-K | 1999-06-29 | 1998-12-31 |
| Employee plan annual report | 11-K | 1999-06-29 | 1998-12-31 |
| Employee plan annual report | 11-K | 1999-06-29 | 1998-12-31 |
| Employee plan annual report | 11-K | 1999-06-28 | 1998-12-31 |
| Quarterly report | 10-Q | 1999-05-12 | 1999-04-03 |
| Employee stock plan | S-8 | 1999-05-10 | - |
| Proxy statement | DEF 14A | 1999-03-30 | 1999-04-28 |
| Annual report | 10-K | 1999-03-15 | 1999-01-02 |
| Passive ownership stake | SC 13G | 1999-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 1999-02-09 | - |
| Passive ownership stake | SC 13G | 1999-02-09 | - |
| Major company event | 8-K | 1999-01-06 | 1999-01-06 |
| Quarterly report (amended) | 10-Q/A | 1998-12-17 | 1998-10-03 |
| Quarterly report | 10-Q | 1998-11-12 | 1998-10-03 |
| Major company event | 8-K | 1998-10-06 | 1998-10-05 |
| Major company event | 8-K | 1998-08-11 | 1998-08-11 |
| Quarterly report | 10-Q | 1998-08-10 | 1998-07-04 |
| Passive ownership stake | SC 13G | 1998-07-09 | - |
| Employee plan annual report | 11-K | 1998-06-26 | 1997-12-31 |
| Employee plan annual report | 11-K | 1998-06-26 | 1997-12-31 |
| Employee plan annual report | 11-K | 1998-06-26 | 1997-12-31 |
