| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 04/20/98 | 424B5 | Form 424B5: Prospectus [Rule 424(b)(5)] | 44 | |
| 04/20/98 | 424B5 | Form 424B5: Prospectus [Rule 424(b)(5)] | 44 | |
| 04/15/98 | 8-K | Form 8-K: Current report | 3 | |
| 03/26/98 | 10-K405 | Form 10-K405: Annual report [Sections 13 and 15(d), S-K Item 405] | 128 | |
| 03/12/98 | 8-K | Form 8-K: Current report | 3 | |
| 02/19/98 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 2 | |
| 02/10/98 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 4 | |
| 02/09/98 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 4 | |
| 01/30/98 | 8-K | Form 8-K: Current report | 39 | |
| 01/22/98 | 8-K | Form 8-K: Current report | 10 |