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Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Oct. 31, 2020
Assets    
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] us-gaap:OtherAssetsNoncurrent us-gaap:OtherAssetsNoncurrent
Operating lease ROU assets $ 2,203 $ 2,053
Liabilities and Stockholders' Equity    
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:AccruedLiabilitiesCurrent us-gaap:AccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesNoncurrent us-gaap:OtherLiabilitiesNoncurrent
Current operating lease liabilities $ 529 $ 521
Non-current operating lease liabilities 1,705 1,610
Total operating lease liabilities $ 2,234 $ 2,131