| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 03/11/02 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 4 | |
| 02/13/02 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 7 | |
| 02/12/02 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 4 | |
| 02/12/02 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 3 | |
| 02/12/02 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 3 | |
| 02/11/02 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 6 | |
| 11/09/01 | 10-Q | Form 10-Q: Quarterly report [Sections 13 or 15(d)] | 9 | |
| 10/10/01 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 4 | |
| 10/03/01 | S-3 | Form S-3: Registration statement under Securities Act of 1933 | 14 | |
| 09/07/01 | SC 13G/A | Form SC 13G/A: Statement of Beneficial Ownership by Certain Investors | 6 |