Note 5 - Fair Value Measurement - Fair Value of Long-term Debt (Details) - USD ($) $ in Thousands |
Jan. 31, 2022 |
Oct. 31, 2021 |
|---|---|---|
| Reported Value Measurement [Member] | Senior Secured Notes [Member] | ||
| Debt, fair value | $ 375,000 | $ 375,000 |
| Reported Value Measurement [Member] | Capital Lease Obligations [Member] | ||
| Debt, fair value | 355 | 381 |
| Estimate of Fair Value Measurement [Member] | Senior Secured Notes [Member] | ||
| Debt, fair value | 375,000 | 390,938 |
| Estimate of Fair Value Measurement [Member] | Capital Lease Obligations [Member] | ||
| Debt, fair value | $ 355 | $ 381 |